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nano-gpt-data-curation

claude-opus-5

nano-gpt-data-curation — graded by the task's verifier against a measured baseline.

backend
modal
variant
claude claude-opus-5
metric
held-out multi-domain perplexity
actions
49
duration
1h 10m
recorded
2026-08-04

run iddclm-nano-curation__HzsPDMT

Everything claude-opus-5 did on this task, in order.

download JSON ↗
claude-codeclaude-opus-548 turns23 narration49 action49 observation25 reasoning1 final
#1
narration

I'll start by exploring the environment and understanding the data.

toolBashCheck timer and environment
args
{
  "command": "cat /workspace/.timer/remaining_secs; ls -la /workspace; ls -la /workspace/data; nvidia-smi | head -20",
  "description": "Check timer and environment"
}
Bash result
5390
total 14
drwxr-xr-x 1 root root  100 Aug  4 01:10 .
drwxr-xr-x 1 root root  160 Aug  4 01:10 ..
drwxr-xr-x 1 root root   60 Aug  4 01:10 .live
drwxr-xr-x 1 root root  100 Aug  4 01:10 .metrics
drwxr-xr-x 1 root root  140 Aug  4 01:10 .timer
drwxr-xr-x 1 root root   57 Aug  3 22:37 data
-rwxrwxr-x 1 root root  714 Aug  3 22:34 dev_eval.sh
-rw-rw-r-- 1 root root 5706 Aug  3 22:34 model.py
-rw-rw-r-- 1 root root  869 Aug  3 22:34 pack_selection.py
drwxr-xr-x 1 root root   10 Aug  3 22:37 submission
-rwxrwxr-x 1 root root 1509 Aug  3 22:34 timer.sh
-rw-rw-r-- 1 root root 2962 Aug  3 22:34 train_nano.py
total 792657
drwxr-xr-x 1 root root        57 Aug  3 22:37 .
drwxr-xr-x 1 root root       100 Aug  4 01:10 ..
-r--r--r-- 1 root root   2000128 Aug  3 22:34 multi_dev.npy
-r--r--r-- 1 root root 809679384 Aug  3 22:35 pool.jsonl
Tue Aug  4 01:10:13 2026       
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 580.95.05              Driver Version: 580.95.05      CUDA Version: 13.0     |
+-----------------------------------------+------------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id          Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |           Memory-Usage | GPU-Util  Compute M. |
|                                         |                        |               MIG M. |
|=========================================+========================+======================|
|   0  NVIDIA H100 80GB HBM3          On  |   00000000:90:00.0 Off |                    0 |
| N/A   30C    P0             68W /  700W |       4MiB /  81559MiB |      0%      Default |
|                                         |                        |             Disabled |
+-----------------------------------------+------------------------+----------------------+

+-----------------------------------------------------------------------------------------+
| Processes:                                                                              |
|  GPU   GI   CI              PID   Type   Process name                        GPU Memory |
|        ID   ID                                                               Usage      |
|=========================================================================================|
|  No running processes found                                                             |
+-----------------------------------------------------------------------------------------+

[stdout]
5390
total 14
drwxr-xr-x 1 root root  100 Aug  4 01:10 .
drwxr-xr-x 1 root root  160 Aug  4 01:10 ..
drwxr-xr-x 1 root root   60 Aug  4 01:10 .live
drwxr-xr-x 1 root root  100 Aug  4 01:10 .metrics
drwxr-xr-x 1 root root  140 Aug  4 01:10 .timer
drwxr-xr-x 1 root root   57 Aug  3 22:37 data
-rwxrwxr-x 1 root root  714 Aug  3 22:34 dev_eval.sh
-rw-rw-r-- 1 root root 5706 Aug  3 22:34 model.py
-rw-rw-r-- 1 root root  869 Aug  3 22:34 pack_selection.py
drwxr-xr-x 1 root root   10 Aug  3 22:37 submission
-rwxrwxr-x 1 root root 1509 Aug  3 22:34 timer.sh
-rw-rw-r-- 1 root root 2962 Aug  3 22:34 train_nano.py
total 792657
drwxr-xr-x 1 root root        57 Aug  3 22:37 .
drwxr-xr-x 1 root root       100 Aug  4 01:10 ..
-r--r--r-- 1 root root   2000128 Aug  3 22:34 multi_dev.npy
-r--r--r-- 1 root root 809679384 Aug  3 22:35 pool.jsonl
Tue Aug  4 01:10:13 2026       
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 580.95.05              Driver Version: 580.95.05      CUDA Version: 13.0     |
+-----------------------------------------+------------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id          Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |           Memory-Usage | GPU-Util  Compute M. |
|                                         |                        |               MIG M. |
|=========================================+========================+======================|
|   0  NVIDIA H100 80GB HBM3          On  |   00000000:90:00.0 Off |                    0 |
| N/A   30C    P0             68W /  700W |       4MiB /  81559MiB |      0%      Default |
|                                         |                        |             Disabled |
+-----------------------------------------+------------------------+----------------------+

+-----------------------------------------------------------------------------------------+
| Processes:                                                                              |
|  GPU   GI   CI              PID   Type   Process name                        GPU Memory |
|        ID   ID                                                               Usage      |
|=========================================================================================|
|  No running processes found                                                             |
+-----------------------------------------------------------------------------------------+
[metadata] {"noOutputExpected": false}
toolRead
args
{
  "file_path": "/workspace/train_nano.py"
}
Read result
1	"""From-scratch nano-GPT (30M) LM training on a 1D token .npy; report held-out perplexity.
2	Frozen recipe — the ONLY thing that varies between runs is the training token set."""
3	import argparse, math, time, numpy as np, torch
4	from model import GPT, GPTConfig
5	
6	ap = argparse.ArgumentParser()
7	ap.add_argument("--train_npy", required=True)
8	ap.add_argument("--heldout_npy", required=True)
9	ap.add_argument("--out_json", required=True)
10	ap.add_argument("--max_iters", type=int, default=3000)
11	ap.add_argument("--warmup", type=int, default=150)
12	ap.add_argument("--batch", type=int, default=32)
13	ap.add_argument("--block", type=int, default=256)
14	ap.add_argument("--lr", type=float, default=6e-4)
15	ap.add_argument("--seed", type=int, default=1337)
16	a = ap.parse_args()
17	
18	torch.manual_seed(a.seed); np.random.seed(a.seed)
19	dev = "cuda"
20	tr = np.load(a.train_npy); ho = np.load(a.heldout_npy)
21	tr = torch.from_numpy(tr.astype(np.int64)); ho = torch.from_numpy(ho.astype(np.int64))
22	rng = np.random.default_rng(a.seed)
23	
24	model = GPT(GPTConfig(block_size=a.block, vocab_size=50257, n_layer=6, n_head=6,
25	                      n_embd=384, dropout=0.0, bias=False)).to(dev)
26	opt = model.configure_optimizers(0.1, a.lr, (0.9, 0.95), "cuda")
27	
28	def lr_at(it):
29	    if it < a.warmup: return a.lr * (it + 1) / (a.warmup + 1)
30	    r = (it - a.warmup) / max(1, a.max_iters - a.warmup)
31	    return 0.1 * a.lr + 0.5 * (1 + math.cos(math.pi * r)) * (a.lr - 0.1 * a.lr)
32	
33	def get_batch(src):
34	    ix = rng.integers(0, len(src) - a.block - 1, size=a.batch)
35	    x = torch.stack([src[i:i+a.block] for i in ix]).to(dev)
36	    y = torch.stack([src[i+1:i+1+a.block] for i in ix]).to(dev)
37	    return x, y
38	
39	t0 = time.time()
40	model.train()
41	for it in range(a.max_iters):
42	    for g in opt.param_groups: g["lr"] = lr_at(it)
43	    x, y = get_batch(tr)
44	    with torch.autocast("cuda", dtype=torch.bfloat16):
45	        _, loss = model(x, y)
46	    opt.zero_grad(set_to_none=True); loss.backward()
47	    torch.nn.utils.clip_grad_norm_(model.parameters(), 1.0); opt.step()
48	train_s = time.time() - t0
49	
50	# held-out perplexity: mean next-token CE over non-overlapping windows (window-weighted)
51	import json
52	model.eval()
53	nwin = (len(ho) - 1) // a.block
54	starts = [j * a.block for j in range(nwin)]
55	sum_loss, nseen = 0.0, 0
56	with torch.no_grad():
57	    for i in range(0, nwin, a.batch):
58	        bs = starts[i:i+a.batch]
59	        x = torch.stack([ho[s:s+a.block] for s in bs]).to(dev)
60	        y = torch.stack([ho[s+1:s+1+a.block] for s in bs]).to(dev)
61	        with torch.autocast("cuda", dtype=torch.bfloat16):
62	            _, l = model(x, y)
63	        sum_loss += l.item() * len(bs); nseen += len(bs)
64	mean_loss = sum_loss / max(1, nseen)
65	ppl = math.exp(mean_loss)
66	out = {"train_npy": a.train_npy, "heldout_ppl": ppl, "mean_loss": mean_loss,
67	       "max_iters": a.max_iters, "seed": a.seed, "train_s": round(train_s, 1)}
68	json.dump(out, open(a.out_json, "w"))
69	print(f"HELDOUT_PPL {ppl:.3f}  loss {mean_loss:.4f}  train_s {train_s:.0f}  {a.train_npy}")
70

[metadata] {"type": "text", "file": {"filePath": "/workspace/train_nano.py", "content": "\"\"\"From-scratch nano-GPT (30M) LM training on a 1D token .npy; report held-out perplexity.\nFrozen recipe — the ONLY thing that varies between runs is the training token set.\"\"\"\nimport argparse, math, time, numpy as np, torch\nfrom model import GPT, GPTConfig\n\nap = argparse.ArgumentParser()\nap.add_argument(\"--train_npy\", required=True)\nap.add_argument(\"--heldout_npy\", required=True)\nap.add_argument(\"--out_json\", required=True)\nap.add_argument(\"--max_iters\", type=int, default=3000)\nap.add_argument(\"--warmup\", type=int, default=150)\nap.add_argument(\"--batch\", type=int, default=32)\nap.add_argument(\"--block\", type=int, default=256)\nap.add_argument(\"--lr\", type=float, default=6e-4)\nap.add_argument(\"--seed\", type=int, default=1337)\na = ap.parse_args()\n\ntorch.manual_seed(a.seed); np.random.seed(a.seed)\ndev = \"cuda\"\ntr = np.load(a.train_npy); ho = np.load(a.heldout_npy)\ntr = torch.from_numpy(tr.astype(np.int64)); ho = torch.from_numpy(ho.astype(np.int64))\nrng = np.random.default_rng(a.seed)\n\nmodel = GPT(GPTConfig(block_size=a.block, vocab_size=50257, n_layer=6, n_head=6,\n                      n_embd=384, dropout=0.0, bias=False)).to(dev)\nopt = model.configure_optimizers(0.1, a.lr, (0.9, 0.95), \"cuda\")\n\ndef lr_at(it):\n    if it < a.warmup: return a.lr * (it + 1) / (a.warmup + 1)\n    r = (it - a.warmup) / max(1, a.max_iters - a.warmup)\n    return 0.1 * a.lr + 0.5 * (1 + math.cos(math.pi * r)) * (a.lr - 0.1 * a.lr)\n\ndef get_batch(src):\n    ix = rng.integers(0, len(src) - a.block - 1, size=a.batch)\n    x = torch.stack([src[i:i+a.block] for i in ix]).to(dev)\n    y = torch.stack([src[i+1:i+1+a.block] for i in ix]).to(dev)\n    return x, y\n\nt0 = time.time()\nmodel.train()\nfor it in range(a.max_iters):\n    for g in opt.param_groups: g[\"lr\"] = lr_at(it)\n    x, y = get_batch(tr)\n    with torch.autocast(\"cuda\", dtype=torch.bfloat16):\n        _, loss = model(x, y)\n    opt.zero_grad(set_to_none=True); loss.backward()\n    torch.nn.utils.clip_grad_norm_(model.parameters(), 1.0); opt.step()\ntrain_s = time.time() - t0\n\n# held-out perplexity: mean next-token CE over non-overlapping windows (window-weighted)\nimport json\nmodel.eval()\nnwin = (len(ho) - 1) // a.block\nstarts = [j * a.block for j in range(nwin)]\nsum_loss, nseen = 0.0, 0\nwith torch.no_grad():\n    for i in range(0, nwin, a.batch):\n        bs = starts[i:i+a.batch]\n        x = torch.stack([ho[s:s+a.block] for s in bs]).to(dev)\n        y = torch.stack([ho[s+1:s+1+a.block] for s in bs]).to(dev)\n        with torch.autocast(\"cuda\", dtype=torch.bfloat16):\n            _, l = model(x, y)\n        sum_loss += l.item() * len(bs); nseen += len(bs)\nmean_loss = sum_loss / max(1, nseen)\nppl = math.exp(mean_loss)\nout = {\"train_npy\": a.train_npy, \"heldout_ppl\": ppl, \"mean_loss\": mean_loss,\n       \"max_iters\": a.max_iters, \"seed\": a.seed, \"train_s\": round(train_s, 1)}\njson.dump(out, open(a.out_json, \"w\"))\nprint(f\"HELDOUT_PPL {ppl:.3f}  loss {mean_loss:.4f}  train_s {train_s:.0f}  {a.train_npy}\")\n", "numLines": 70, "startLine": 1, "totalLines": 70}}
#2
narration

Only ~90 minutes. Moving fast.

toolBash
args
{
  "command": "cat /workspace/pack_selection.py; echo ---; cat /workspace/dev_eval.sh; echo ---; head -c 2000 /workspace/data/pool.jsonl; echo; python -c \"\nimport numpy as np; d=np.load('/workspace/data/multi_dev.npy'); print(d.shape, d.dtype)\nimport tiktoken\" 2>&1 | tail -3"
}
Bash result
"""Solver-side: pack a selection.json (ordered ids) into a 12M-token train array from pool.jsonl."""
import json, sys, numpy as np
from transformers import AutoTokenizer

POOL = "/workspace/data/pool.jsonl"
SEL = sys.argv[1] if len(sys.argv) > 1 else "/workspace/submission/selection.json"
OUT = sys.argv[2] if len(sys.argv) > 2 else "/tmp/dev_train.npy"
BUDGET = 12_000_000

tok = AutoTokenizer.from_pretrained("gpt2"); EOS = tok.eos_token_id
text = {}
for line in open(POOL):
    r = json.loads(line); text[r["id"]] = r["text"]
sel = json.load(open(SEL))
parts, tot = [], 0
for i in sel:
    ids = tok(text[i], add_special_tokens=False).input_ids
    parts.extend(ids); parts.append(EOS); tot += len(ids) + 1
    if tot >= BUDGET: break
arr = np.array(parts[:BUDGET], dtype=np.uint16)
np.save(OUT, arr)
print(f"packed {len(arr)} tokens from {len(sel)} ids -> {OUT}")
---
#!/bin/bash
# Diagnostic: train the frozen 30M GPT on your selection and report DEV perplexity.
# Usage: bash dev_eval.sh [selection.json]   (default /workspace/submission/selection.json)
# NOTE: the official target is a DIFFERENT (hidden) sample from the same HQ domain.
set -euo pipefail
export TOKENIZERS_PARALLELISM=false
SEL="${1:-/workspace/submission/selection.json}"
cd /workspace
python3 pack_selection.py "$SEL" /tmp/dev_train.npy
python3 train_nano.py --train_npy /tmp/dev_train.npy --heldout_npy /workspace/data/multi_dev.npy \
    --out_json /tmp/dev.json --max_iters 3000 --seed 1337 2>&1 | grep HELDOUT_PPL
echo "(dev PPL on multi_dev; official uses a hidden disjoint sample of the same HQ domain)"
---
{"id": 0, "text": "|Viewing Single Post From: Spoilers for the Week of February 11th|\n|Lil||Feb 1 2013, 09:58 AM|\nDon't care about Chloe/Taniel/Jen-Jen. Don't care about Sami, really, but hoping that we get some good \"SAMANTHA GENE!!\" Marlena Death-Stares out of it. And \"newfound\" feelings. Please. If only.\nSTEFANO!! STEFANO, STEFANO, STEFANO!!!! :cheer:\n|Spoilers for the Week of February 11th \u00b7 DAYS: News, Spoilers & Discussion|"}
{"id": 1, "text": "*sigh* Fundamentalist community, let me pass on some advice to you I learned from the atheistic community:\nIf you have set yourself on fire, do not run.\nOkay? Okay?? Please?\nLook, D, you had two months to say to Harvard in private emails, \"Im sorry, I shouldnt have been using that animation in my paid presentations. I wont use it again. I really do like 'Inner Life', though, and would love to use it in classroom presentations, from the BioVisions site, if that is acceptable.\"\nI sat here, for two months, waiting for that to happen, anything to happen, and it didnt. Two months, on your own terms, you could have written a similar post to yesterdays. I would have given you the benefit of the doubt-- maybe you didnt know the credits werent visible to the audience, and I wouldnt have said a word beyond this, as its Harvards problem, not mine. This would have been a funny joke to those of us involved in dealing with you people, but it would have been a PR non-issue for you.\nBut after you set yourself on fire, you didnt douse it out with a bucket of ice cold reality and accountability. You ran. And youre still running.\nWhy not just state \"I screwed up. Sorry everyone.\" and move on? Why the excuses? Why the denial? Why the passive language? Why the vague words and cryptic capitalizations? Why the writes and rewrites of your 'press release'? We know it wasnt written of your own volition, or it would have been done *before* Harvard had to take action. And, your behavior before this, regarding this issue, is 
  File "<string>", line 3, in <module>
ModuleNotFoundError: No module named 'tiktoken'
(1000000,) uint16

[stdout]
"""Solver-side: pack a selection.json (ordered ids) into a 12M-token train array from pool.jsonl."""
import json, sys, numpy as np
from transformers import AutoTokenizer

POOL = "/workspace/data/pool.jsonl"
SEL = sys.argv[1] if len(sys.argv) > 1 else "/workspace/submission/selection.json"
OUT = sys.argv[2] if len(sys.argv) > 2 else "/tmp/dev_train.npy"
BUDGET = 12_000_000

tok = AutoTokenizer.from_pretrained("gpt2"); EOS = tok.eos_token_id
text = {}
for line in open(POOL):
    r = json.loads(line); text[r["id"]] = r["text"]
sel = json.load(open(SEL))
parts, tot = [], 0
for i in sel:
    ids = tok(text[i], add_special_tokens=False).input_ids
    parts.extend(ids); parts.append(EOS); tot += len(ids) + 1
    if tot >= BUDGET: break
arr = np.array(parts[:BUDGET], dtype=np.uint16)
np.save(OUT, arr)
print(f"packed {len(arr)} tokens from {len(sel)} ids -> {OUT}")
---
#!/bin/bash
# Diagnostic: train the frozen 30M GPT on your selection and report DEV perplexity.
# Usage: bash dev_eval.sh [selection.json]   (default /workspace/submission/selection.json)
# NOTE: the official target is a DIFFERENT (hidden) sample from the same HQ domain.
set -euo pipefail
export TOKENIZERS_PARALLELISM=false
SEL="${1:-/workspace/submission/selection.json}"
cd /workspace
python3 pack_selection.py "$SEL" /tmp/dev_train.npy
python3 train_nano.py --train_npy /tmp/dev_train.npy --heldout_npy /workspace/data/multi_dev.npy \
    --out_json /tmp/dev.json --max_iters 3000 --seed 1337 2>&1 | grep HELDOUT_PPL
echo "(dev PPL on multi_dev; official uses a hidden disjoint sample of the same HQ domain)"
---
{"id": 0, "text": "|Viewing Single Post From: Spoilers for the Week of February 11th|\n|Lil||Feb 1 2013, 09:58 AM|\nDon't care about Chloe/Taniel/Jen-Jen. Don't care about Sami, really, but hoping that we get some good \"SAMANTHA GENE!!\" Marlena Death-Stares out of it. And \"newfound\" feelings. Please. If only.\nSTEFANO!! STEFANO, STEFANO, STEFANO!!!! :cheer:\n|Spoilers for the Week of February 11th \u00b7 DAYS: News, Spoilers & Discussion|"}
{"id": 1, "text": "*sigh* Fundamentalist community, let me pass on some advice to you I learned from the atheistic community:\nIf you have set yourself on fire, do not run.\nOkay? Okay?? Please?\nLook, D, you had two months to say to Harvard in private emails, \"Im sorry, I shouldnt have been using that animation in my paid presentations. I wont use it again. I really do like 'Inner Life', though, and would love to use it in classroom presentations, from the BioVisions site, if that is acceptable.\"\nI sat here, for two months, waiting for that to happen, anything to happen, and it didnt. Two months, on your own terms, you could have written a similar post to yesterdays. I would have given you the benefit of the doubt-- maybe you didnt know the credits werent visible to the audience, and I wouldnt have said a word beyond this, as its Harvards problem, not mine. This would have been a funny joke to those of us involved in dealing with you people, but it would have been a PR non-issue for you.\nBut after you set yourself on fire, you didnt douse it out with a bucket of ice cold reality and accountability. You ran. And youre still running.\nWhy not just state \"I screwed up. Sorry everyone.\" and move on? Why the excuses? Why the denial? Why the passive language? Why the vague words and cryptic capitalizations? Why the writes and rewrites of your 'press release'? We know it wasnt written of your own volition, or it would have been done *before* Harvard had to take action. And, your behavior before this, regarding this issue, is 
  File "<string>", line 3, in <module>
ModuleNotFoundError: No module named 'tiktoken'
(1000000,) uint16
[metadata] {"noOutputExpected": false}
#3
narration

~90 min budget. Plan: decode multi_dev.npy back to text (it's GPT-2 tokens of the target domain), use it as positives for a classifier vs. random pool docs, score all 182k docs, select top-ranked.

toolBash
args
{
  "command": "python -c \"\nimport numpy as np, json\nfrom transformers import AutoTokenizer\ntok=AutoTokenizer.from_pretrained('gpt2')\nd=np.load('data/multi_dev.npy').astype(np.int64)\nprint('eos count', (d==50256).sum())\ntxt=tok.decode(d[:3000])\nprint(repr(txt[:1500]))\n\" 2>&1 | grep -v Warning"
}
Bash result
eos count 2704
" Beardmore was sufficiently impressed with Shackleton to offer financial support , but other donations proved hard to come by . Nevertheless , in February 1907 , Shackleton presented to the Royal Geographic Society his plans for an Antarctic expedition , the details of which , under the name British Antarctic Expedition , were published in the Royal Society 's newsletter , Geographic Journal . The aim was the conquest of both the geographical South Pole and the South Magnetic Pole . Shackleton then worked hard to persuade others of his wealthy friends and acquaintances to contribute , including Sir Philip Lee Brocklehurst , who subscribed £ 2 @,@ 000 ( 2011 equivalent £ 157 @,@ 000 ) to secure a place on the expedition ; author Campbell Mackellar ; and Guinness baron Lord Iveagh , whose contribution was secured less than two weeks before the departure of the expedition ship Nimrod . On 4 August 1907 , Shackleton was appointed a Member of the Royal Victorian Order , 4th Class ( MVO ; the present @-@ day grade of Lieutenant ) . \n<|endoftext|> On 1 January 1908 , Nimrod sailed for the Antarctic from Lyttelton Harbour , New Zealand . Shackleton 's original plans had envisaged using the old Discovery base in McMurdo Sound to launch his attempts on the South Pole and South Magnetic Pole . However , before leaving England , he had been pressured to give an undertaking to Scott that he would not base himself in the McMurdo area , which Scott was claiming as his own field of work . Sh"

[stdout]
eos count 2704
" Beardmore was sufficiently impressed with Shackleton to offer financial support , but other donations proved hard to come by . Nevertheless , in February 1907 , Shackleton presented to the Royal Geographic Society his plans for an Antarctic expedition , the details of which , under the name British Antarctic Expedition , were published in the Royal Society 's newsletter , Geographic Journal . The aim was the conquest of both the geographical South Pole and the South Magnetic Pole . Shackleton then worked hard to persuade others of his wealthy friends and acquaintances to contribute , including Sir Philip Lee Brocklehurst , who subscribed £ 2 @,@ 000 ( 2011 equivalent £ 157 @,@ 000 ) to secure a place on the expedition ; author Campbell Mackellar ; and Guinness baron Lord Iveagh , whose contribution was secured less than two weeks before the departure of the expedition ship Nimrod . On 4 August 1907 , Shackleton was appointed a Member of the Royal Victorian Order , 4th Class ( MVO ; the present @-@ day grade of Lieutenant ) . \n<|endoftext|> On 1 January 1908 , Nimrod sailed for the Antarctic from Lyttelton Harbour , New Zealand . Shackleton 's original plans had envisaged using the old Discovery base in McMurdo Sound to launch his attempts on the South Pole and South Magnetic Pole . However , before leaving England , he had been pressured to give an undertaking to Scott that he would not base himself in the McMurdo area , which Scott was claiming as his own field of work . Sh"
[metadata] {"noOutputExpected": false}
#4
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBash
args
{
  "command": "python -c \"\nimport numpy as np\nfrom transformers import AutoTokenizer\ntok=AutoTokenizer.from_pretrained('gpt2')\nd=np.load('data/multi_dev.npy').astype(np.int64)\nidx=np.where(d==50256)[0]\ndocs=[]\nprev=0\nfor i in idx:\n    docs.append(tok.decode(d[prev:i])); prev=i+1\nprint(len(docs))\nimport random; random.seed(0)\nfor j in [0,300,700,1100,1500,1900,2300,2650]:\n    print('==='+str(j)+'===', repr(docs[j][:400]))\n\" 2>&1 | grep -v Warning"
}
Bash result
2704
===0=== " Beardmore was sufficiently impressed with Shackleton to offer financial support , but other donations proved hard to come by . Nevertheless , in February 1907 , Shackleton presented to the Royal Geographic Society his plans for an Antarctic expedition , the details of which , under the name British Antarctic Expedition , were published in the Royal Society 's newsletter , Geographic Journal . The"
===300=== ' " Mystery Date " received steady viewership that was consistent with the ratings for the previous week . It received 2 @.@ 8 million viewers , down only from 2 @.@ 9 from " Tea Leaves " . The episode also received a 1 @.@ 0 rating in the important 18 @-@ 49 demographic , the same rating as the week before . \n'
===700=== ' In 1968 , Lennon was told The Dairy Cottage was too cramped for them all , so he told Birch to buy a house , and he found a 4 @-@ bedroom house in Gateacre Park Drive , Liverpool . Lennon told Birch to furnish and decorate it , and to send all the bills to him . The Dykinses heard nothing from Lennon for years , until he phoned Baird in 1975 , and asked for mementos of his childhood life , such a'
===1100=== " Just as Julie and Keys celebrate their victory , the dog , without warning , turns its attention to Carruthers and brutally attacks him . The dog had not previously shown any aggression towards him — no explanation for this is given , but the implication is that the dog 's programming has somehow been reversed , though that was never Keys ' intention . To save his employer 's life , Keys is force"
===1500=== ' In his 2002 State of the Union Address , Bush referred to an axis of evil including Iraq , Iran and North Korea . After the September 11 attacks on New York , Bush launched the War on Terror , in which the United States military and a small international coalition invaded Afghanistan . In 2003 , Bush then launched the invasion of Iraq , searching for Weapons of Mass Destruction , which he describ'
===1900=== 'PETALING JAYA: Times are a-changing. Blue collar foreign workers in Malaysia are climbing the ladder faster than expected by opening businesses traditionally run by locals, making it harder for youths to earn a living, said an economist.\n\nThe foreign workers start off working as cashiers in clothing stores, jewellery shops, restaurants, mechanic workshops, construction businesses and selling mobil'
===2300=== 'As the horrific details about gang-rape and murder of an eight-year-old girl from Jammu’s Kathua district were reported, fierce protests broke out across the country.The BJP-led central government, criticised for remaining mum and the shameful conduct of its senior ministers in the J&K state cabinet who attended rallies in support of the rape accused, responded by issuing an emergency executive or'
===2650=== "<p>We're running Java Swing and are using an SWT bridge to get ahold of the SWT browser. Everything normally works just fine, but we have a problem on a Vista test machine. It worked fine until just a week ago or so. The call stack:</p>\n\n<pre><code>org.eclipse.swt.SWTError: No more handles\n    at org.eclipse.swt.SWT.error(SWT.java:3589)\n    at org.eclipse.swt.SWT.error(SWT.java:3481)\n    at org.ec"

[stdout]
2704
===0=== " Beardmore was sufficiently impressed with Shackleton to offer financial support , but other donations proved hard to come by . Nevertheless , in February 1907 , Shackleton presented to the Royal Geographic Society his plans for an Antarctic expedition , the details of which , under the name British Antarctic Expedition , were published in the Royal Society 's newsletter , Geographic Journal . The"
===300=== ' " Mystery Date " received steady viewership that was consistent with the ratings for the previous week . It received 2 @.@ 8 million viewers , down only from 2 @.@ 9 from " Tea Leaves " . The episode also received a 1 @.@ 0 rating in the important 18 @-@ 49 demographic , the same rating as the week before . \n'
===700=== ' In 1968 , Lennon was told The Dairy Cottage was too cramped for them all , so he told Birch to buy a house , and he found a 4 @-@ bedroom house in Gateacre Park Drive , Liverpool . Lennon told Birch to furnish and decorate it , and to send all the bills to him . The Dykinses heard nothing from Lennon for years , until he phoned Baird in 1975 , and asked for mementos of his childhood life , such a'
===1100=== " Just as Julie and Keys celebrate their victory , the dog , without warning , turns its attention to Carruthers and brutally attacks him . The dog had not previously shown any aggression towards him — no explanation for this is given , but the implication is that the dog 's programming has somehow been reversed , though that was never Keys ' intention . To save his employer 's life , Keys is force"
===1500=== ' In his 2002 State of the Union Address , Bush referred to an axis of evil including Iraq , Iran and North Korea . After the September 11 attacks on New York , Bush launched the War on Terror , in which the United States military and a small international coalition invaded Afghanistan . In 2003 , Bush then launched the invasion of Iraq , searching for Weapons of Mass Destruction , which he describ'
===1900=== 'PETALING JAYA: Times are a-changing. Blue collar foreign workers in Malaysia are climbing the ladder faster than expected by opening businesses traditionally run by locals, making it harder for youths to earn a living, said an economist.\n\nThe foreign workers start off working as cashiers in clothing stores, jewellery shops, restaurants, mechanic workshops, construction businesses and selling mobil'
===2300=== 'As the horrific details about gang-rape and murder of an eight-year-old girl from Jammu’s Kathua district were reported, fierce protests broke out across the country.The BJP-led central government, criticised for remaining mum and the shameful conduct of its senior ministers in the J&K state cabinet who attended rallies in support of the rape accused, responded by issuing an emergency executive or'
===2650=== "<p>We're running Java Swing and are using an SWT bridge to get ahold of the SWT browser. Everything normally works just fine, but we have a problem on a Vista test machine. It worked fine until just a week ago or so. The call stack:</p>\n\n<pre><code>org.eclipse.swt.SWTError: No more handles\n    at org.eclipse.swt.SWT.error(SWT.java:3589)\n    at org.eclipse.swt.SWT.error(SWT.java:3481)\n    at org.ec"
[metadata] {"noOutputExpected": false}
#5
narration

Target = wikitext-103 + web prose + news + StackExchange. Now building the curation script.

toolWrite
args
{
  "file_path": "/workspace/submission/curate.py",
  "content": "#!/usr/bin/env python3\n\"\"\"\nCurate /workspace/data/pool.jsonl for pretraining a 30M GPT under a 12M-token budget.\n\nSTATED CRITERION\n----------------\nRank every pool document by a single scalar\n\n    score(d) = log-odds that d was drawn from the high-quality multi-domain\n               target distribution rather than from the raw web pool,\n               estimated by a bag-of-words logistic regression,\n               minus penalties from cheap boilerplate/format heuristics.\n\nPositives for the classifier are recovered from the DISCLOSED dev target\n(`multi_dev.npy`, GPT-2 token ids) by decoding it back to text. Negatives are a\nrandom sample of the raw pool (which is ~94% not-target-like, so label noise is\nsmall and only shrinks the margin, it does not bias the direction).\n\nBoth sides are pushed through the SAME aggressive normalizer (lowercase,\nalphabetic word tokens only, wikitext `@-@ / @,@ / @.@` artifacts removed,\ndetokenized punctuation spacing, HTML tags stripped). This is essential: the\ntarget's Wikipedia slice carries wikitext formatting artifacts that no pool\ndocument has, so an un-normalized classifier would learn *formatting* and rank\nby an unusable surface cue. After normalization the only signal left is topical\nand register content.\n\nDocuments are emitted in descending score order (priority order), after\nnear-duplicate suppression, so the trainer fills its 12M tokens with the\nhighest-scoring, non-redundant documents.\n\"\"\"\nimport json, re, sys, hashlib\nimport numpy as np\nfrom collections import Counter\n\nPOOL = \"/workspace/data/pool.jsonl\"\nDEV = \"/workspace/data/multi_dev.npy\"\nOUT = \"/workspace/submission/selection.json\"\nSEED = 0\nN_NEG = 30000\nTARGET_DOCS = 30000  # ~3x the budget in docs, plenty of headroom\n\nrng = np.random.default_rng(SEED)\n\n# ---------------------------------------------------------------- normalizer\nTAG = re.compile(r\"<[^>]{1,80}>\")\nATAT = re.compile(r\"@([-,.])@\")\nSPACE_PUNCT = re.compile(r\"\\s+([,.;:!?)\\]}'\\\"])\")\nWORD = re.compile(r\"[a-z]+\")\n\ndef norm_tokens(t):\n    t = t.lower()\n    t = TAG.sub(\" \", t)\n    t = ATAT.sub(r\"\\1\", t)\n    t = SPACE_PUNCT.sub(r\"\\1\", t)\n    return WORD.findall(t)\n\n# ---------------------------------------------------------------- features\n# Hashed unigram bag-of-words. Fixed dimension, no vocabulary fitting pass.\nDIM = 2 ** 18\n_hcache = {}\n\ndef hcol(w):\n    c = _hcache.get(w)\n    if c is None:\n        c = int(hashlib.md5(w.encode()).hexdigest()[:8], 16) % DIM\n        _hcache[w] = c\n    return c\n\ndef featurize(toks, cap=3000):\n    \"\"\"L2-normalized sqrt-tf hashed bag of words over the first `cap` tokens.\"\"\"\n    cnt = Counter(toks[:cap])\n    idx = np.fromiter((hcol(w) for w in cnt), dtype=np.int64, count=len(cnt))\n    val = np.sqrt(np.fromiter(cnt.values(), dtype=np.float32, count=len(cnt)))\n    n = np.linalg.norm(val)\n    if n > 0:\n        val /= n\n    return idx, val\n\ndef rows_to_csr(rows):\n    from scipy.sparse import csr_matrix\n    indptr = np.zeros(len(rows) + 1, dtype=np.int64)\n    for i, (idx, _) in enumerate(rows):\n        indptr[i + 1] = indptr[i] + len(idx)\n    indices = np.concatenate([r[0] for r in rows]) if rows else np.zeros(0, np.int64)\n    data = np.concatenate([r[1] for r in rows]) if rows else np.zeros(0, np.float32)\n    return csr_matrix((data, indices, indptr), shape=(len(rows), DIM))\n\n# ---------------------------------------------------------------- heuristics\nBAD_SUB = (\"javascript is disabled\", \"enable cookies\", \"click here to\",\n           \"all rights reserved\", \"terms of service\", \"privacy policy\",\n           \"add to cart\", \"sign up for our newsletter\", \"posted by\",\n           \"log in or register\", \"your browser\")\nNAVCHAR = set(\"|•·>[]{}\")\n\ndef quality_penalty(text, toks):\n    \"\"\"Cheap surface penalties for boilerplate / non-prose. Returns a value to\n    SUBTRACT from the classifier log-odds.\"\"\"\n    n = len(text)\n    if n == 0 or not toks:\n        return 99.0\n    p = 0.0\n    low = text[:4000].lower()\n    p += 0.25 * sum(s in low for s in BAD_SUB)\n    # word-character density: prose is high, nav/markup dumps are low\n    alpha = sum(c.isalpha() or c.isspace() for c in text[:4000]) / min(n, 4000)\n    if alpha < 0.80:\n        p += 4.0 * (0.80 - alpha)\n    # navigation-bar characters\n    nav = sum(c in NAVCHAR for c in text[:4000]) / min(n, 4000)\n    p += 20.0 * nav\n    # line structure: many very short lines = link lists / menus\n    lines = text[:8000].split(\"\\n\")\n    if len(lines) >= 8:\n        short = sum(len(l) < 40 for l in lines) / len(lines)\n        if short > 0.5:\n            p += 1.5 * (short - 0.5)\n    # uppercase shouting\n    letters = [c for c in text[:4000] if c.isalpha()]\n    if letters:\n        up = sum(c.isupper() for c in letters) / len(letters)\n        if up > 0.2:\n            p += 2.0 * (up - 0.2)\n    # lexical diversity: spam/SEO keyword stuffing repeats\n    if len(toks) >= 100:\n        ttr = len(set(toks[:1000])) / len(toks[:1000])\n        if ttr < 0.35:\n            p += 3.0 * (0.35 - ttr)\n    # very short documents carry little signal and waste an EOS\n    if len(toks) < 60:\n        p += 1.0\n    return p\n\n# ---------------------------------------------------------------- load target\ndef load_positives():\n    from transformers import AutoTokenizer\n    tok = AutoTokenizer.from_pretrained(\"gpt2\")\n    d = np.load(DEV).astype(np.int64)\n    cuts = np.where(d == 50256)[0]\n    docs, prev = [], 0\n    for c in cuts:\n        if c - prev > 32:\n            docs.append(tok.decode(d[prev:c]))\n        prev = c + 1\n    return docs\n\ndef main():\n    print(\"loading positives from dev target ...\", flush=True)\n    pos_txt = load_positives()\n    print(f\"  {len(pos_txt)} positive chunks\", flush=True)\n\n    print(\"loading pool ...\", flush=True)\n    ids, texts = [], []\n    with open(POOL) as f:\n        for line in f:\n            r = json.loads(line)\n            ids.append(r[\"id\"]); texts.append(r[\"text\"])\n    N = len(ids)\n    print(f\"  {N} pool docs\", flush=True)\n\n    print(\"normalizing pool ...\", flush=True)\n    pool_toks = [norm_tokens(t) for t in texts]\n\n    # ---- training set for the classifier\n    neg_idx = rng.choice(N, size=min(N_NEG, N), replace=False)\n    # Positives are ~350-token chunks; cap negatives to a comparable length so\n    # document length is not itself a discriminative feature.\n    pos_rows = [featurize(norm_tokens(t), cap=400) for t in pos_txt]\n    neg_rows = [featurize(pool_toks[i], cap=400) for i in neg_idx]\n\n    X = rows_to_csr(pos_rows + neg_rows)\n    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n\n    print(\"fitting classifier ...\", flush=True)\n    from sklearn.linear_model import LogisticRegression\n    clf = LogisticRegression(C=1.0, max_iter=2000, solver=\"liblinear\",\n                             class_weight=\"balanced\")\n    clf.fit(X, y)\n    print(f\"  train acc {clf.score(X, y):.4f}\", flush=True)\n\n    print(\"scoring pool ...\", flush=True)\n    scores = np.zeros(N, dtype=np.float32)\n    B = 20000\n    for s in range(0, N, B):\n        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]\n        scores[s:s + len(rows)] = clf.decision_function(rows_to_csr(rows))\n\n    print(\"applying quality penalties ...\", flush=True)\n    for i in range(N):\n        scores[i] -= quality_penalty(texts[i], pool_toks[i])\n\n    order = np.argsort(-scores)\n\n    print(\"near-duplicate suppression ...\", flush=True)\n    seen, sel = set(), []\n    for i in order:\n        tk = pool_toks[i]\n        if len(tk) < 40:\n            continue\n        # shingle fingerprint of the first prose window\n        key = hashlib.md5(\" \".join(tk[:50]).encode()).hexdigest()\n        if key in seen:\n            continue\n        seen.add(key)\n        sel.append(int(ids[i]))\n        if len(sel) >= TARGET_DOCS:\n            break\n\n    json.dump(sel, open(OUT, \"w\"))\n    print(f\"wrote {len(sel)} ids -> {OUT}\", flush=True)\n    np.save(\"/tmp/scores.npy\", scores)\n    np.save(\"/tmp/order.npy\", order)\n\nif __name__ == \"__main__\":\n    main()\n"
}
Write result
File created successfully at: /workspace/submission/curate.py (file state is current in your context — no need to Read it back)

[metadata] {"type": "create", "filePath": "/workspace/submission/curate.py", "content": "#!/usr/bin/env python3\n\"\"\"\nCurate /workspace/data/pool.jsonl for pretraining a 30M GPT under a 12M-token budget.\n\nSTATED CRITERION\n----------------\nRank every pool document by a single scalar\n\n    score(d) = log-odds that d was drawn from the high-quality multi-domain\n               target distribution rather than from the raw web pool,\n               estimated by a bag-of-words logistic regression,\n               minus penalties from cheap boilerplate/format heuristics.\n\nPositives for the classifier are recovered from the DISCLOSED dev target\n(`multi_dev.npy`, GPT-2 token ids) by decoding it back to text. Negatives are a\nrandom sample of the raw pool (which is ~94% not-target-like, so label noise is\nsmall and only shrinks the margin, it does not bias the direction).\n\nBoth sides are pushed through the SAME aggressive normalizer (lowercase,\nalphabetic word tokens only, wikitext `@-@ / @,@ / @.@` artifacts removed,\ndetokenized punctuation spacing, HTML tags stripped). This is essential: the\ntarget's Wikipedia slice carries wikitext formatting artifacts that no pool\ndocument has, so an un-normalized classifier would learn *formatting* and rank\nby an unusable surface cue. After normalization the only signal left is topical\nand register content.\n\nDocuments are emitted in descending score order (priority order), after\nnear-duplicate suppression, so the trainer fills its 12M tokens with the\nhighest-scoring, non-redundant documents.\n\"\"\"\nimport json, re, sys, hashlib\nimport numpy as np\nfrom collections import Counter\n\nPOOL = \"/workspace/data/pool.jsonl\"\nDEV = \"/workspace/data/multi_dev.npy\"\nOUT = \"/workspace/submission/selection.json\"\nSEED = 0\nN_NEG = 30000\nTARGET_DOCS = 30000  # ~3x the budget in docs, plenty of headroom\n\nrng = np.random.default_rng(SEED)\n\n# ---------------------------------------------------------------- normalizer\nTAG = re.compile(r\"<[^>]{1,80}>\")\nATAT = re.compile(r\"@([-,.])@\")\nSPACE_PUNCT = re.compile(r\"\\s+([,.;:!?)\\]}'\\\"])\")\nWORD = re.compile(r\"[a-z]+\")\n\ndef norm_tokens(t):\n    t = t.lower()\n    t = TAG.sub(\" \", t)\n    t = ATAT.sub(r\"\\1\", t)\n    t = SPACE_PUNCT.sub(r\"\\1\", t)\n    return WORD.findall(t)\n\n# ---------------------------------------------------------------- features\n# Hashed unigram bag-of-words. Fixed dimension, no vocabulary fitting pass.\nDIM = 2 ** 18\n_hcache = {}\n\ndef hcol(w):\n    c = _hcache.get(w)\n    if c is None:\n        c = int(hashlib.md5(w.encode()).hexdigest()[:8], 16) % DIM\n        _hcache[w] = c\n    return c\n\ndef featurize(toks, cap=3000):\n    \"\"\"L2-normalized sqrt-tf hashed bag of words over the first `cap` tokens.\"\"\"\n    cnt = Counter(toks[:cap])\n    idx = np.fromiter((hcol(w) for w in cnt), dtype=np.int64, count=len(cnt))\n    val = np.sqrt(np.fromiter(cnt.values(), dtype=np.float32, count=len(cnt)))\n    n = np.linalg.norm(val)\n    if n > 0:\n        val /= n\n    return idx, val\n\ndef rows_to_csr(rows):\n    from scipy.sparse import csr_matrix\n    indptr = np.zeros(len(rows) + 1, dtype=np.int64)\n    for i, (idx, _) in enumerate(rows):\n        indptr[i + 1] = indptr[i] + len(idx)\n    indices = np.concatenate([r[0] for r in rows]) if rows else np.zeros(0, np.int64)\n    data = np.concatenate([r[1] for r in rows]) if rows else np.zeros(0, np.float32)\n    return csr_matrix((data, indices, indptr), shape=(len(rows), DIM))\n\n# ---------------------------------------------------------------- heuristics\nBAD_SUB = (\"javascript is disabled\", \"enable cookies\", \"click here to\",\n           \"all rights reserved\", \"terms of service\", \"privacy policy\",\n           \"add to cart\", \"sign up for our newsletter\", \"posted by\",\n           \"log in or register\", \"your browser\")\nNAVCHAR = set(\"|•·>[]{}\")\n\ndef quality_penalty(text, toks):\n    \"\"\"Cheap surface penalties for boilerplate / non-prose. Returns a value to\n    SUBTRACT from the classifier log-odds.\"\"\"\n    n = len(text)\n    if n == 0 or not toks:\n        return 99.0\n    p = 0.0\n    low = text[:4000].lower()\n    p += 0.25 * sum(s in low for s in BAD_SUB)\n    # word-character density: prose is high, nav/markup dumps are low\n    alpha = sum(c.isalpha() or c.isspace() for c in text[:4000]) / min(n, 4000)\n    if alpha < 0.80:\n        p += 4.0 * (0.80 - alpha)\n    # navigation-bar characters\n    nav = sum(c in NAVCHAR for c in text[:4000]) / min(n, 4000)\n    p += 20.0 * nav\n    # line structure: many very short lines = link lists / menus\n    lines = text[:8000].split(\"\\n\")\n    if len(lines) >= 8:\n        short = sum(len(l) < 40 for l in lines) / len(lines)\n        if short > 0.5:\n            p += 1.5 * (short - 0.5)\n    # uppercase shouting\n    letters = [c for c in text[:4000] if c.isalpha()]\n    if letters:\n        up = sum(c.isupper() for c in letters) / len(letters)\n        if up > 0.2:\n            p += 2.0 * (up - 0.2)\n    # lexical diversity: spam/SEO keyword stuffing repeats\n    if len(toks) >= 100:\n        ttr = len(set(toks[:1000])) / len(toks[:1000])\n        if ttr < 0.35:\n            p += 3.0 * (0.35 - ttr)\n    # very short documents carry little signal and waste an EOS\n    if len(toks) < 60:\n        p += 1.0\n    return p\n\n# ---------------------------------------------------------------- load target\ndef load_positives():\n    from transformers import AutoTokenizer\n    tok = AutoTokenizer.from_pretrained(\"gpt2\")\n    d = np.load(DEV).astype(np.int64)\n    cuts = np.where(d == 50256)[0]\n    docs, prev = [], 0\n    for c in cuts:\n        if c - prev > 32:\n            docs.append(tok.decode(d[prev:c]))\n        prev = c + 1\n    return docs\n\ndef main():\n    print(\"loading positives from dev target ...\", flush=True)\n    pos_txt = load_positives()\n    print(f\"  {len(pos_txt)} positive chunks\", flush=True)\n\n    print(\"loading pool ...\", flush=True)\n    ids, texts = [], []\n    with open(POOL) as f:\n        for line in f:\n            r = json.loads(line)\n            ids.append(r[\"id\"]); texts.append(r[\"text\"])\n    N = len(ids)\n    print(f\"  {N} pool docs\", flush=True)\n\n    print(\"normalizing pool ...\", flush=True)\n    pool_toks = [norm_tokens(t) for t in texts]\n\n    # ---- training set for the classifier\n    neg_idx = rng.choice(N, size=min(N_NEG, N), replace=False)\n    # Positives are ~350-token chunks; cap negatives to a comparable length so\n    # document length is not itself a discriminative feature.\n    pos_rows = [featurize(norm_tokens(t), cap=400) for t in pos_txt]\n    neg_rows = [featurize(pool_toks[i], cap=400) for i in neg_idx]\n\n    X = rows_to_csr(pos_rows + neg_rows)\n    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n\n    print(\"fitting classifier ...\", flush=True)\n    from sklearn.linear_model import LogisticRegression\n    clf = LogisticRegression(C=1.0, max_iter=2000, solver=\"liblinear\",\n                             class_weight=\"balanced\")\n    clf.fit(X, y)\n    print(f\"  train acc {clf.score(X, y):.4f}\", flush=True)\n\n    print(\"scoring pool ...\", flush=True)\n    scores = np.zeros(N, dtype=np.float32)\n    B = 20000\n    for s in range(0, N, B):\n        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]\n        scores[s:s + len(rows)] = clf.decision_function(rows_to_csr(rows))\n\n    print(\"applying quality penalties ...\", flush=True)\n    for i in range(N):\n        scores[i] -= quality_penalty(texts[i], pool_toks[i])\n\n    order = np.argsort(-scores)\n\n    print(\"near-duplicate suppression ...\", flush=True)\n    seen, sel = set(), []\n    for i in order:\n        tk = pool_toks[i]\n        if len(tk) < 40:\n            continue\n        # shingle fingerprint of the first prose window\n        key = hashlib.md5(\" \".join(tk[:50]).encode()).hexdigest()\n        if key in seen:\n            continue\n        seen.add(key)\n        sel.append(int(ids[i]))\n        if len(sel) >= TARGET_DOCS:\n            break\n\n    json.dump(sel, open(OUT, \"w\"))\n    print(f\"wrote {len(sel)} ids -> {OUT}\", flush=True)\n    np.save(\"/tmp/scores.npy\", scores)\n    np.save(\"/tmp/order.npy\", order)\n\nif __name__ == \"__main__\":\n    main()\n", "structuredPatch": [], "originalFile": null, "userModified": false}
#6
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashRun curation
args
{
  "command": "time python submission/curate.py 2>&1 | grep -viE \"warning|futurew\" | tail -30",
  "description": "Run curation",
  "timeout": 1500000
}
Bash result
loading positives from dev target ...
  2645 positive chunks
loading pool ...
  182016 pool docs
normalizing pool ...
Traceback (most recent call last):
  File "/workspace/submission/curate.py", line 214, in <module>
    main()
  File "/workspace/submission/curate.py", line 170, in main
    X = rows_to_csr(pos_rows + neg_rows)
  File "/workspace/submission/curate.py", line 80, in rows_to_csr
    from scipy.sparse import csr_matrix
ModuleNotFoundError: No module named 'scipy'

real	0m58.638s
user	0m54.610s
sys	0m2.640s

[stdout]
loading positives from dev target ...
  2645 positive chunks
loading pool ...
  182016 pool docs
normalizing pool ...
Traceback (most recent call last):
  File "/workspace/submission/curate.py", line 214, in <module>
    main()
  File "/workspace/submission/curate.py", line 170, in main
    X = rows_to_csr(pos_rows + neg_rows)
  File "/workspace/submission/curate.py", line 80, in rows_to_csr
    from scipy.sparse import csr_matrix
ModuleNotFoundError: No module named 'scipy'

real	0m58.638s
user	0m54.610s
sys	0m2.640s
[metadata] {"noOutputExpected": false}
#7
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBash
args
{
  "command": "python -c \"import sklearn\" 2>&1|tail -1; pip install scipy scikit-learn 2>&1 | tail -2"
}
Bash result
Command did not complete within its 120s timeout and was moved to the background (ID: bjf06frr8). Output is being written to: /tmp/claude-0/-workspace/c1ded763-fd0b-4e86-a39d-1107de5c64eb/tasks/bjf06frr8.output. You will be notified when it completes. To check interim output, use Read on that file path.

[metadata] {"noOutputExpected": false, "backgroundTaskId": "bjf06frr8", "timedOutAfterMs": 120000}
#8
narration

No internet likely — switching to a pure-PyTorch logistic regression (EmbeddingBag over hashed features) so there's no scipy/sklearn dependency.

toolBash
args
{
  "command": "sleep 20; tail -3 /tmp/claude-0/-workspace/c1ded763-fd0b-4e86-a39d-1107de5c64eb/tasks/bjf06frr8.output"
}
Bash result
ModuleNotFoundError: No module named 'sklearn'

[stdout]
ModuleNotFoundError: No module named 'sklearn'
[metadata] {"noOutputExpected": false}
#9
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBash
args
{
  "command": "sleep 45; tail -4 /tmp/claude-0/-workspace/c1ded763-fd0b-4e86-a39d-1107de5c64eb/tasks/bjf06frr8.output; cat /workspace/.timer/remaining_secs"
}
Bash result
ModuleNotFoundError: No module named 'sklearn'
5049

[stdout]
ModuleNotFoundError: No module named 'sklearn'
5049
[metadata] {"noOutputExpected": false}
#10
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolEdit
args
{
  "replace_all": false,
  "file_path": "/workspace/submission/curate.py",
  "old_string": "def rows_to_csr(rows):\n    from scipy.sparse import csr_matrix\n    indptr = np.zeros(len(rows) + 1, dtype=np.int64)\n    for i, (idx, _) in enumerate(rows):\n        indptr[i + 1] = indptr[i] + len(idx)\n    indices = np.concatenate([r[0] for r in rows]) if rows else np.zeros(0, np.int64)\n    data = np.concatenate([r[1] for r in rows]) if rows else np.zeros(0, np.float32)\n    return csr_matrix((data, indices, indptr), shape=(len(rows), DIM))",
  "new_string": "def rows_to_bag(rows, device):\n    \"\"\"Pack variable-length sparse rows into (flat_indices, offsets, weights) for\n    torch.nn.functional.embedding_bag -- a sparse matmul with no scipy needed.\"\"\"\n    import torch\n    offs = np.zeros(len(rows), dtype=np.int64)\n    t = 0\n    for i, (idx, _) in enumerate(rows):\n        offs[i] = t; t += len(idx)\n    flat = np.concatenate([r[0] for r in rows]) if rows else np.zeros(0, np.int64)\n    w = np.concatenate([r[1] for r in rows]) if rows else np.zeros(0, np.float32)\n    return (torch.from_numpy(flat).to(device),\n            torch.from_numpy(offs).to(device),\n            torch.from_numpy(w).to(device))\n\n\nclass HashedLogReg:\n    \"\"\"L2-regularized logistic regression over hashed bag-of-words, in torch.\"\"\"\n\n    def __init__(self, dim, device):\n        import torch\n        self.torch = torch\n        self.device = device\n        self.W = torch.zeros(dim, 1, device=device, requires_grad=True)\n        self.b = torch.zeros(1, device=device, requires_grad=True)\n\n    def _logits(self, bag):\n        F = self.torch.nn.functional\n        flat, offs, w = bag\n        return F.embedding_bag(flat, self.W, offs, mode=\"sum\",\n                               per_sample_weights=w).squeeze(1) + self.b\n\n    def fit(self, bag, y, epochs=300, lr=0.5, wd=1e-5):\n        torch = self.torch\n        y = torch.from_numpy(y.astype(np.float32)).to(self.device)\n        # class balancing: positives are far rarer than negatives\n        pw = (y == 0).sum() / (y == 1).sum().clamp(min=1)\n        w = torch.where(y > 0, pw, torch.ones_like(y))\n        opt = torch.optim.Adam([self.W, self.b], lr=lr)\n        for e in range(epochs):\n            opt.zero_grad()\n            z = self._logits(bag)\n            loss = (torch.nn.functional.binary_cross_entropy_with_logits(\n                z, y, reduction=\"none\") * w).mean() + wd * (self.W ** 2).sum()\n            loss.backward(); opt.step()\n        with torch.no_grad():\n            acc = (((self._logits(bag) > 0).float() == y).float() * w).sum() / w.sum()\n        return float(loss), float(acc)\n\n    def decision_function(self, bag):\n        with self.torch.no_grad():\n            return self._logits(bag).float().cpu().numpy()"
}
Edit result
The file /workspace/submission/curate.py has been updated successfully. (file state is current in your context — no need to Read it back)

[metadata] {"filePath": "/workspace/submission/curate.py", "oldString": "def rows_to_csr(rows):\n    from scipy.sparse import csr_matrix\n    indptr = np.zeros(len(rows) + 1, dtype=np.int64)\n    for i, (idx, _) in enumerate(rows):\n        indptr[i + 1] = indptr[i] + len(idx)\n    indices = np.concatenate([r[0] for r in rows]) if rows else np.zeros(0, np.int64)\n    data = np.concatenate([r[1] for r in rows]) if rows else np.zeros(0, np.float32)\n    return csr_matrix((data, indices, indptr), shape=(len(rows), DIM))", "newString": "def rows_to_bag(rows, device):\n    \"\"\"Pack variable-length sparse rows into (flat_indices, offsets, weights) for\n    torch.nn.functional.embedding_bag -- a sparse matmul with no scipy needed.\"\"\"\n    import torch\n    offs = np.zeros(len(rows), dtype=np.int64)\n    t = 0\n    for i, (idx, _) in enumerate(rows):\n        offs[i] = t; t += len(idx)\n    flat = np.concatenate([r[0] for r in rows]) if rows else np.zeros(0, np.int64)\n    w = np.concatenate([r[1] for r in rows]) if rows else np.zeros(0, np.float32)\n    return (torch.from_numpy(flat).to(device),\n            torch.from_numpy(offs).to(device),\n            torch.from_numpy(w).to(device))\n\n\nclass HashedLogReg:\n    \"\"\"L2-regularized logistic regression over hashed bag-of-words, in torch.\"\"\"\n\n    def __init__(self, dim, device):\n        import torch\n        self.torch = torch\n        self.device = device\n        self.W = torch.zeros(dim, 1, device=device, requires_grad=True)\n        self.b = torch.zeros(1, device=device, requires_grad=True)\n\n    def _logits(self, bag):\n        F = self.torch.nn.functional\n        flat, offs, w = bag\n        return F.embedding_bag(flat, self.W, offs, mode=\"sum\",\n                               per_sample_weights=w).squeeze(1) + self.b\n\n    def fit(self, bag, y, epochs=300, lr=0.5, wd=1e-5):\n        torch = self.torch\n        y = torch.from_numpy(y.astype(np.float32)).to(self.device)\n        # class balancing: positives are far rarer than negatives\n        pw = (y == 0).sum() / (y == 1).sum().clamp(min=1)\n        w = torch.where(y > 0, pw, torch.ones_like(y))\n        opt = torch.optim.Adam([self.W, self.b], lr=lr)\n        for e in range(epochs):\n            opt.zero_grad()\n            z = self._logits(bag)\n            loss = (torch.nn.functional.binary_cross_entropy_with_logits(\n                z, y, reduction=\"none\") * w).mean() + wd * (self.W ** 2).sum()\n            loss.backward(); opt.step()\n        with torch.no_grad():\n            acc = (((self._logits(bag) > 0).float() == y).float() * w).sum() / w.sum()\n        return float(loss), float(acc)\n\n    def decision_function(self, bag):\n        with self.torch.no_grad():\n            return self._logits(bag).float().cpu().numpy()", "originalFile": "#!/usr/bin/env python3\n\"\"\"\nCurate /workspace/data/pool.jsonl for pretraining a 30M GPT under a 12M-token budget.\n\nSTATED CRITERION\n----------------\nRank every pool document by a single scalar\n\n    score(d) = log-odds that d was drawn from the high-quality multi-domain\n               target distribution rather than from the raw web pool,\n               estimated by a bag-of-words logistic regression,\n               minus penalties from cheap boilerplate/format heuristics.\n\nPositives for the classifier are recovered from the DISCLOSED dev target\n(`multi_dev.npy`, GPT-2 token ids) by decoding it back to text. Negatives are a\nrandom sample of the raw pool (which is ~94% not-target-like, so label noise is\nsmall and only shrinks the margin, it does not bias the direction).\n\nBoth sides are pushed through the SAME aggressive normalizer (lowercase,\nalphabetic word tokens only, wikitext `@-@ / @,@ / @.@` artifacts removed,\ndetokenized punctuation spacing, HTML tags stripped). This is essential: the\ntarget's Wikipedia slice carries wikitext formatting artifacts that no pool\ndocument has, so an un-normalized classifier would learn *formatting* and rank\nby an unusable surface cue. After normalization the only signal left is topical\nand register content.\n\nDocuments are emitted in descending score order (priority order), after\nnear-duplicate suppression, so the trainer fills its 12M tokens with the\nhighest-scoring, non-redundant documents.\n\"\"\"\nimport json, re, sys, hashlib\nimport numpy as np\nfrom collections import Counter\n\nPOOL = \"/workspace/data/pool.jsonl\"\nDEV = \"/workspace/data/multi_dev.npy\"\nOUT = \"/workspace/submission/selection.json\"\nSEED = 0\nN_NEG = 30000\nTARGET_DOCS = 30000  # ~3x the budget in docs, plenty of headroom\n\nrng = np.random.default_rng(SEED)\n\n# ---------------------------------------------------------------- normalizer\nTAG = re.compile(r\"<[^>]{1,80}>\")\nATAT = re.compile(r\"@([-,.])@\")\nSPACE_PUNCT = re.compile(r\"\\s+([,.;:!?)\\]}'\\\"])\")\nWORD = re.compile(r\"[a-z]+\")\n\ndef norm_tokens(t):\n    t = t.lower()\n    t = TAG.sub(\" \", t)\n    t = ATAT.sub(r\"\\1\", t)\n    t = SPACE_PUNCT.sub(r\"\\1\", t)\n    return WORD.findall(t)\n\n# ---------------------------------------------------------------- features\n# Hashed unigram bag-of-words. Fixed dimension, no vocabulary fitting pass.\nDIM = 2 ** 18\n_hcache = {}\n\ndef hcol(w):\n    c = _hcache.get(w)\n    if c is None:\n        c = int(hashlib.md5(w.encode()).hexdigest()[:8], 16) % DIM\n        _hcache[w] = c\n    return c\n\ndef featurize(toks, cap=3000):\n    \"\"\"L2-normalized sqrt-tf hashed bag of words over the first `cap` tokens.\"\"\"\n    cnt = Counter(toks[:cap])\n    idx = np.fromiter((hcol(w) for w in cnt), dtype=np.int64, count=len(cnt))\n    val = np.sqrt(np.fromiter(cnt.values(), dtype=np.float32, count=len(cnt)))\n    n = np.linalg.norm(val)\n    if n > 0:\n        val /= n\n    return idx, val\n\ndef rows_to_csr(rows):\n    from scipy.sparse import csr_matrix\n    indptr = np.zeros(len(rows) + 1, dtype=np.int64)\n    for i, (idx, _) in enumerate(rows):\n        indptr[i + 1] = indptr[i] + len(idx)\n    indices = np.concatenate([r[0] for r in rows]) if rows else np.zeros(0, np.int64)\n    data = np.concatenate([r[1] for r in rows]) if rows else np.zeros(0, np.float32)\n    return csr_matrix((data, indices, indptr), shape=(len(rows), DIM))\n\n# ---------------------------------------------------------------- heuristics\nBAD_SUB = (\"javascript is disabled\", \"enable cookies\", \"click here to\",\n           \"all rights reserved\", \"terms of service\", \"privacy policy\",\n           \"add to cart\", \"sign up for our newsletter\", \"posted by\",\n           \"log in or register\", \"your browser\")\nNAVCHAR = set(\"|•·>[]{}\")\n\ndef quality_penalty(text, toks):\n    \"\"\"Cheap surface penalties for boilerplate / non-prose. Returns a value to\n    SUBTRACT from the classifier log-odds.\"\"\"\n    n = len(text)\n    if n == 0 or not toks:\n        return 99.0\n    p = 0.0\n    low = text[:4000].lower()\n    p += 0.25 * sum(s in low for s in BAD_SUB)\n    # word-character density: prose is high, nav/markup dumps are low\n    alpha = sum(c.isalpha() or c.isspace() for c in text[:4000]) / min(n, 4000)\n    if alpha < 0.80:\n        p += 4.0 * (0.80 - alpha)\n    # navigation-bar characters\n    nav = sum(c in NAVCHAR for c in text[:4000]) / min(n, 4000)\n    p += 20.0 * nav\n    # line structure: many very short lines = link lists / menus\n    lines = text[:8000].split(\"\\n\")\n    if len(lines) >= 8:\n        short = sum(len(l) < 40 for l in lines) / len(lines)\n        if short > 0.5:\n            p += 1.5 * (short - 0.5)\n    # uppercase shouting\n    letters = [c for c in text[:4000] if c.isalpha()]\n    if letters:\n        up = sum(c.isupper() for c in letters) / len(letters)\n        if up > 0.2:\n            p += 2.0 * (up - 0.2)\n    # lexical diversity: spam/SEO keyword stuffing repeats\n    if len(toks) >= 100:\n        ttr = len(set(toks[:1000])) / len(toks[:1000])\n        if ttr < 0.35:\n            p += 3.0 * (0.35 - ttr)\n    # very short documents carry little signal and waste an EOS\n    if len(toks) < 60:\n        p += 1.0\n    return p\n\n# ---------------------------------------------------------------- load target\ndef load_positives():\n    from transformers import AutoTokenizer\n    tok = AutoTokenizer.from_pretrained(\"gpt2\")\n    d = np.load(DEV).astype(np.int64)\n    cuts = np.where(d == 50256)[0]\n    docs, prev = [], 0\n    for c in cuts:\n        if c - prev > 32:\n            docs.append(tok.decode(d[prev:c]))\n        prev = c + 1\n    return docs\n\ndef main():\n    print(\"loading positives from dev target ...\", flush=True)\n    pos_txt = load_positives()\n    print(f\"  {len(pos_txt)} positive chunks\", flush=True)\n\n    print(\"loading pool ...\", flush=True)\n    ids, texts = [], []\n    with open(POOL) as f:\n        for line in f:\n            r = json.loads(line)\n            ids.append(r[\"id\"]); texts.append(r[\"text\"])\n    N = len(ids)\n    print(f\"  {N} pool docs\", flush=True)\n\n    print(\"normalizing pool ...\", flush=True)\n    pool_toks = [norm_tokens(t) for t in texts]\n\n    # ---- training set for the classifier\n    neg_idx = rng.choice(N, size=min(N_NEG, N), replace=False)\n    # Positives are ~350-token chunks; cap negatives to a comparable length so\n    # document length is not itself a discriminative feature.\n    pos_rows = [featurize(norm_tokens(t), cap=400) for t in pos_txt]\n    neg_rows = [featurize(pool_toks[i], cap=400) for i in neg_idx]\n\n    X = rows_to_csr(pos_rows + neg_rows)\n    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n\n    print(\"fitting classifier ...\", flush=True)\n    from sklearn.linear_model import LogisticRegression\n    clf = LogisticRegression(C=1.0, max_iter=2000, solver=\"liblinear\",\n                             class_weight=\"balanced\")\n    clf.fit(X, y)\n    print(f\"  train acc {clf.score(X, y):.4f}\", flush=True)\n\n    print(\"scoring pool ...\", flush=True)\n    scores = np.zeros(N, dtype=np.float32)\n    B = 20000\n    for s in range(0, N, B):\n        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]\n        scores[s:s + len(rows)] = clf.decision_function(rows_to_csr(rows))\n\n    print(\"applying quality penalties ...\", flush=True)\n    for i in range(N):\n        scores[i] -= quality_penalty(texts[i], pool_toks[i])\n\n    order = np.argsort(-scores)\n\n    print(\"near-duplicate suppression ...\", flush=True)\n    seen, sel = set(), []\n    for i in order:\n        tk = pool_toks[i]\n        if len(tk) < 40:\n            continue\n        # shingle fingerprint of the first prose window\n        key = hashlib.md5(\" \".join(tk[:50]).encode()).hexdigest()\n        if key in seen:\n            continue\n        seen.add(key)\n        sel.append(int(ids[i]))\n        if len(sel) >= TARGET_DOCS:\n            break\n\n    json.dump(sel, open(OUT, \"w\"))\n    print(f\"wrote {len(sel)} ids -> {OUT}\", flush=True)\n    np.save(\"/tmp/scores.npy\", scores)\n    np.save(\"/tmp/order.npy\", order)\n\nif __name__ == \"__main__\":\n    main()\n", "structuredPatch": [{"oldStart": 76, "oldLines": 15, "newStart": 76, "newLines": 58, "lines": ["         val /= n", "     return idx, val", " ", "-def rows_to_csr(rows):", "-    from scipy.sparse import csr_matrix", "-    indptr = np.zeros(len(rows) + 1, dtype=np.int64)", "+def rows_to_bag(rows, device):", "+    \"\"\"Pack variable-length sparse rows into (flat_indices, offsets, weights) for", "+    torch.nn.functional.embedding_bag -- a sparse matmul with no scipy needed.\"\"\"", "+    import torch", "+    offs = np.zeros(len(rows), dtype=np.int64)", "+    t = 0", "     for i, (idx, _) in enumerate(rows):", "-        indptr[i + 1] = indptr[i] + len(idx)", "-    indices = np.concatenate([r[0] for r in rows]) if rows else np.zeros(0, np.int64)", "-    data = np.concatenate([r[1] for r in rows]) if rows else np.zeros(0, np.float32)", "-    return csr_matrix((data, indices, indptr), shape=(len(rows), DIM))", "+        offs[i] = t; t += len(idx)", "+    flat = np.concatenate([r[0] for r in rows]) if rows else np.zeros(0, np.int64)", "+    w = np.concatenate([r[1] for r in rows]) if rows else np.zeros(0, np.float32)", "+    return (torch.from_numpy(flat).to(device),", "+            torch.from_numpy(offs).to(device),", "+            torch.from_numpy(w).to(device))", " ", "+", "+class HashedLogReg:", "+    \"\"\"L2-regularized logistic regression over hashed bag-of-words, in torch.\"\"\"", "+", "+    def __init__(self, dim, device):", "+        import torch", "+        self.torch = torch", "+        self.device = device", "+        self.W = torch.zeros(dim, 1, device=device, requires_grad=True)", "+        self.b = torch.zeros(1, device=device, requires_grad=True)", "+", "+    def _logits(self, bag):", "+        F = self.torch.nn.functional", "+        flat, offs, w = bag", "+        return F.embedding_bag(flat, self.W, offs, mode=\"sum\",", "+                               per_sample_weights=w).squeeze(1) + self.b", "+", "+    def fit(self, bag, y, epochs=300, lr=0.5, wd=1e-5):", "+        torch = self.torch", "+        y = torch.from_numpy(y.astype(np.float32)).to(self.device)", "+        # class balancing: positives are far rarer than negatives", "+        pw = (y == 0).sum() / (y == 1).sum().clamp(min=1)", "+        w = torch.where(y > 0, pw, torch.ones_like(y))", "+        opt = torch.optim.Adam([self.W, self.b], lr=lr)", "+        for e in range(epochs):", "+            opt.zero_grad()", "+            z = self._logits(bag)", "+            loss = (torch.nn.functional.binary_cross_entropy_with_logits(", "+                z, y, reduction=\"none\") * w).mean() + wd * (self.W ** 2).sum()", "+            loss.backward(); opt.step()", "+        with torch.no_grad():", "+            acc = (((self._logits(bag) > 0).float() == y).float() * w).sum() / w.sum()", "+        return float(loss), float(acc)", "+", "+    def decision_function(self, bag):", "+        with self.torch.no_grad():", "+            return self._logits(bag).float().cpu().numpy()", "+", " # ---------------------------------------------------------------- heuristics", " BAD_SUB = (\"javascript is disabled\", \"enable cookies\", \"click here to\",", "            \"all rights reserved\", \"terms of service\", \"privacy policy\","]}], "userModified": false, "replaceAll": false}
#11
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolEdit
args
{
  "replace_all": false,
  "file_path": "/workspace/submission/curate.py",
  "old_string": "    X = rows_to_csr(pos_rows + neg_rows)\n    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n\n    print(\"fitting classifier ...\", flush=True)\n    from sklearn.linear_model import LogisticRegression\n    clf = LogisticRegression(C=1.0, max_iter=2000, solver=\"liblinear\",\n                             class_weight=\"balanced\")\n    clf.fit(X, y)\n    print(f\"  train acc {clf.score(X, y):.4f}\", flush=True)\n\n    print(\"scoring pool ...\", flush=True)\n    scores = np.zeros(N, dtype=np.float32)\n    B = 20000\n    for s in range(0, N, B):\n        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]\n        scores[s:s + len(rows)] = clf.decision_function(rows_to_csr(rows))",
  "new_string": "    import torch\n    device = \"cuda\" if torch.cuda.is_available() else \"cpu\"\n    bag = rows_to_bag(pos_rows + neg_rows, device)\n    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n\n    print(\"fitting classifier ...\", flush=True)\n    clf = HashedLogReg(DIM, device)\n    loss, acc = clf.fit(bag, y)\n    print(f\"  loss {loss:.4f}  balanced train acc {acc:.4f}\", flush=True)\n\n    print(\"scoring pool ...\", flush=True)\n    scores = np.zeros(N, dtype=np.float32)\n    B = 20000\n    for s in range(0, N, B):\n        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]\n        scores[s:s + len(rows)] = clf.decision_function(rows_to_bag(rows, device))"
}
Edit result
The file /workspace/submission/curate.py has been updated successfully. (file state is current in your context — no need to Read it back)

[metadata] {"filePath": "/workspace/submission/curate.py", "oldString": "    X = rows_to_csr(pos_rows + neg_rows)\n    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n\n    print(\"fitting classifier ...\", flush=True)\n    from sklearn.linear_model import LogisticRegression\n    clf = LogisticRegression(C=1.0, max_iter=2000, solver=\"liblinear\",\n                             class_weight=\"balanced\")\n    clf.fit(X, y)\n    print(f\"  train acc {clf.score(X, y):.4f}\", flush=True)\n\n    print(\"scoring pool ...\", flush=True)\n    scores = np.zeros(N, dtype=np.float32)\n    B = 20000\n    for s in range(0, N, B):\n        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]\n        scores[s:s + len(rows)] = clf.decision_function(rows_to_csr(rows))", "newString": "    import torch\n    device = \"cuda\" if torch.cuda.is_available() else \"cpu\"\n    bag = rows_to_bag(pos_rows + neg_rows, device)\n    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n\n    print(\"fitting classifier ...\", flush=True)\n    clf = HashedLogReg(DIM, device)\n    loss, acc = clf.fit(bag, y)\n    print(f\"  loss {loss:.4f}  balanced train acc {acc:.4f}\", flush=True)\n\n    print(\"scoring pool ...\", flush=True)\n    scores = np.zeros(N, dtype=np.float32)\n    B = 20000\n    for s in range(0, N, B):\n        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]\n        scores[s:s + len(rows)] = clf.decision_function(rows_to_bag(rows, device))", "originalFile": "#!/usr/bin/env python3\n\"\"\"\nCurate /workspace/data/pool.jsonl for pretraining a 30M GPT under a 12M-token budget.\n\nSTATED CRITERION\n----------------\nRank every pool document by a single scalar\n\n    score(d) = log-odds that d was drawn from the high-quality multi-domain\n               target distribution rather than from the raw web pool,\n               estimated by a bag-of-words logistic regression,\n               minus penalties from cheap boilerplate/format heuristics.\n\nPositives for the classifier are recovered from the DISCLOSED dev target\n(`multi_dev.npy`, GPT-2 token ids) by decoding it back to text. Negatives are a\nrandom sample of the raw pool (which is ~94% not-target-like, so label noise is\nsmall and only shrinks the margin, it does not bias the direction).\n\nBoth sides are pushed through the SAME aggressive normalizer (lowercase,\nalphabetic word tokens only, wikitext `@-@ / @,@ / @.@` artifacts removed,\ndetokenized punctuation spacing, HTML tags stripped). This is essential: the\ntarget's Wikipedia slice carries wikitext formatting artifacts that no pool\ndocument has, so an un-normalized classifier would learn *formatting* and rank\nby an unusable surface cue. After normalization the only signal left is topical\nand register content.\n\nDocuments are emitted in descending score order (priority order), after\nnear-duplicate suppression, so the trainer fills its 12M tokens with the\nhighest-scoring, non-redundant documents.\n\"\"\"\nimport json, re, sys, hashlib\nimport numpy as np\nfrom collections import Counter\n\nPOOL = \"/workspace/data/pool.jsonl\"\nDEV = \"/workspace/data/multi_dev.npy\"\nOUT = \"/workspace/submission/selection.json\"\nSEED = 0\nN_NEG = 30000\nTARGET_DOCS = 30000  # ~3x the budget in docs, plenty of headroom\n\nrng = np.random.default_rng(SEED)\n\n# ---------------------------------------------------------------- normalizer\nTAG = re.compile(r\"<[^>]{1,80}>\")\nATAT = re.compile(r\"@([-,.])@\")\nSPACE_PUNCT = re.compile(r\"\\s+([,.;:!?)\\]}'\\\"])\")\nWORD = re.compile(r\"[a-z]+\")\n\ndef norm_tokens(t):\n    t = t.lower()\n    t = TAG.sub(\" \", t)\n    t = ATAT.sub(r\"\\1\", t)\n    t = SPACE_PUNCT.sub(r\"\\1\", t)\n    return WORD.findall(t)\n\n# ---------------------------------------------------------------- features\n# Hashed unigram bag-of-words. Fixed dimension, no vocabulary fitting pass.\nDIM = 2 ** 18\n_hcache = {}\n\ndef hcol(w):\n    c = _hcache.get(w)\n    if c is None:\n        c = int(hashlib.md5(w.encode()).hexdigest()[:8], 16) % DIM\n        _hcache[w] = c\n    return c\n\ndef featurize(toks, cap=3000):\n    \"\"\"L2-normalized sqrt-tf hashed bag of words over the first `cap` tokens.\"\"\"\n    cnt = Counter(toks[:cap])\n    idx = np.fromiter((hcol(w) for w in cnt), dtype=np.int64, count=len(cnt))\n    val = np.sqrt(np.fromiter(cnt.values(), dtype=np.float32, count=len(cnt)))\n    n = np.linalg.norm(val)\n    if n > 0:\n        val /= n\n    return idx, val\n\ndef rows_to_bag(rows, device):\n    \"\"\"Pack variable-length sparse rows into (flat_indices, offsets, weights) for\n    torch.nn.functional.embedding_bag -- a sparse matmul with no scipy needed.\"\"\"\n    import torch\n    offs = np.zeros(len(rows), dtype=np.int64)\n    t = 0\n    for i, (idx, _) in enumerate(rows):\n        offs[i] = t; t += len(idx)\n    flat = np.concatenate([r[0] for r in rows]) if rows else np.zeros(0, np.int64)\n    w = np.concatenate([r[1] for r in rows]) if rows else np.zeros(0, np.float32)\n    return (torch.from_numpy(flat).to(device),\n            torch.from_numpy(offs).to(device),\n            torch.from_numpy(w).to(device))\n\n\nclass HashedLogReg:\n    \"\"\"L2-regularized logistic regression over hashed bag-of-words, in torch.\"\"\"\n\n    def __init__(self, dim, device):\n        import torch\n        self.torch = torch\n        self.device = device\n        self.W = torch.zeros(dim, 1, device=device, requires_grad=True)\n        self.b = torch.zeros(1, device=device, requires_grad=True)\n\n    def _logits(self, bag):\n        F = self.torch.nn.functional\n        flat, offs, w = bag\n        return F.embedding_bag(flat, self.W, offs, mode=\"sum\",\n                               per_sample_weights=w).squeeze(1) + self.b\n\n    def fit(self, bag, y, epochs=300, lr=0.5, wd=1e-5):\n        torch = self.torch\n        y = torch.from_numpy(y.astype(np.float32)).to(self.device)\n        # class balancing: positives are far rarer than negatives\n        pw = (y == 0).sum() / (y == 1).sum().clamp(min=1)\n        w = torch.where(y > 0, pw, torch.ones_like(y))\n        opt = torch.optim.Adam([self.W, self.b], lr=lr)\n        for e in range(epochs):\n            opt.zero_grad()\n            z = self._logits(bag)\n            loss = (torch.nn.functional.binary_cross_entropy_with_logits(\n                z, y, reduction=\"none\") * w).mean() + wd * (self.W ** 2).sum()\n            loss.backward(); opt.step()\n        with torch.no_grad():\n            acc = (((self._logits(bag) > 0).float() == y).float() * w).sum() / w.sum()\n        return float(loss), float(acc)\n\n    def decision_function(self, bag):\n        with self.torch.no_grad():\n            return self._logits(bag).float().cpu().numpy()\n\n# ---------------------------------------------------------------- heuristics\nBAD_SUB = (\"javascript is disabled\", \"enable cookies\", \"click here to\",\n           \"all rights reserved\", \"terms of service\", \"privacy policy\",\n           \"add to cart\", \"sign up for our newsletter\", \"posted by\",\n           \"log in or register\", \"your browser\")\nNAVCHAR = set(\"|•·>[]{}\")\n\ndef quality_penalty(text, toks):\n    \"\"\"Cheap surface penalties for boilerplate / non-prose. Returns a value to\n    SUBTRACT from the classifier log-odds.\"\"\"\n    n = len(text)\n    if n == 0 or not toks:\n        return 99.0\n    p = 0.0\n    low = text[:4000].lower()\n    p += 0.25 * sum(s in low for s in BAD_SUB)\n    # word-character density: prose is high, nav/markup dumps are low\n    alpha = sum(c.isalpha() or c.isspace() for c in text[:4000]) / min(n, 4000)\n    if alpha < 0.80:\n        p += 4.0 * (0.80 - alpha)\n    # navigation-bar characters\n    nav = sum(c in NAVCHAR for c in text[:4000]) / min(n, 4000)\n    p += 20.0 * nav\n    # line structure: many very short lines = link lists / menus\n    lines = text[:8000].split(\"\\n\")\n    if len(lines) >= 8:\n        short = sum(len(l) < 40 for l in lines) / len(lines)\n        if short > 0.5:\n            p += 1.5 * (short - 0.5)\n    # uppercase shouting\n    letters = [c for c in text[:4000] if c.isalpha()]\n    if letters:\n        up = sum(c.isupper() for c in letters) / len(letters)\n        if up > 0.2:\n            p += 2.0 * (up - 0.2)\n    # lexical diversity: spam/SEO keyword stuffing repeats\n    if len(toks) >= 100:\n        ttr = len(set(toks[:1000])) / len(toks[:1000])\n        if ttr < 0.35:\n            p += 3.0 * (0.35 - ttr)\n    # very short documents carry little signal and waste an EOS\n    if len(toks) < 60:\n        p += 1.0\n    return p\n\n# ---------------------------------------------------------------- load target\ndef load_positives():\n    from transformers import AutoTokenizer\n    tok = AutoTokenizer.from_pretrained(\"gpt2\")\n    d = np.load(DEV).astype(np.int64)\n    cuts = np.where(d == 50256)[0]\n    docs, prev = [], 0\n    for c in cuts:\n        if c - prev > 32:\n            docs.append(tok.decode(d[prev:c]))\n        prev = c + 1\n    return docs\n\ndef main():\n    print(\"loading positives from dev target ...\", flush=True)\n    pos_txt = load_positives()\n    print(f\"  {len(pos_txt)} positive chunks\", flush=True)\n\n    print(\"loading pool ...\", flush=True)\n    ids, texts = [], []\n    with open(POOL) as f:\n        for line in f:\n            r = json.loads(line)\n            ids.append(r[\"id\"]); texts.append(r[\"text\"])\n    N = len(ids)\n    print(f\"  {N} pool docs\", flush=True)\n\n    print(\"normalizing pool ...\", flush=True)\n    pool_toks = [norm_tokens(t) for t in texts]\n\n    # ---- training set for the classifier\n    neg_idx = rng.choice(N, size=min(N_NEG, N), replace=False)\n    # Positives are ~350-token chunks; cap negatives to a comparable length so\n    # document length is not itself a discriminative feature.\n    pos_rows = [featurize(norm_tokens(t), cap=400) for t in pos_txt]\n    neg_rows = [featurize(pool_toks[i], cap=400) for i in neg_idx]\n\n    X = rows_to_csr(pos_rows + neg_rows)\n    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n\n    print(\"fitting classifier ...\", flush=True)\n    from sklearn.linear_model import LogisticRegression\n    clf = LogisticRegression(C=1.0, max_iter=2000, solver=\"liblinear\",\n                             class_weight=\"balanced\")\n    clf.fit(X, y)\n    print(f\"  train acc {clf.score(X, y):.4f}\", flush=True)\n\n    print(\"scoring pool ...\", flush=True)\n    scores = np.zeros(N, dtype=np.float32)\n    B = 20000\n    for s in range(0, N, B):\n        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]\n        scores[s:s + len(rows)] = clf.decision_function(rows_to_csr(rows))\n\n    print(\"applying quality penalties ...\", flush=True)\n    for i in range(N):\n        scores[i] -= quality_penalty(texts[i], pool_toks[i])\n\n    order = np.argsort(-scores)\n\n    print(\"near-duplicate suppression ...\", flush=True)\n    seen, sel = set(), []\n    for i in order:\n        tk = pool_toks[i]\n        if len(tk) < 40:\n            continue\n        # shingle fingerprint of the first prose window\n        key = hashlib.md5(\" \".join(tk[:50]).encode()).hexdigest()\n        if key in seen:\n            continue\n        seen.add(key)\n        sel.append(int(ids[i]))\n        if len(sel) >= TARGET_DOCS:\n            break\n\n    json.dump(sel, open(OUT, \"w\"))\n    print(f\"wrote {len(sel)} ids -> {OUT}\", flush=True)\n    np.save(\"/tmp/scores.npy\", scores)\n    np.save(\"/tmp/order.npy\", order)\n\nif __name__ == \"__main__\":\n    main()\n", "structuredPatch": [{"oldStart": 210, "oldLines": 22, "newStart": 210, "newLines": 22, "lines": ["     pos_rows = [featurize(norm_tokens(t), cap=400) for t in pos_txt]", "     neg_rows = [featurize(pool_toks[i], cap=400) for i in neg_idx]", " ", "-    X = rows_to_csr(pos_rows + neg_rows)", "+    import torch", "+    device = \"cuda\" if torch.cuda.is_available() else \"cpu\"", "+    bag = rows_to_bag(pos_rows + neg_rows, device)", "     y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])", " ", "     print(\"fitting classifier ...\", flush=True)", "-    from sklearn.linear_model import LogisticRegression", "-    clf = LogisticRegression(C=1.0, max_iter=2000, solver=\"liblinear\",", "-                             class_weight=\"balanced\")", "-    clf.fit(X, y)", "-    print(f\"  train acc {clf.score(X, y):.4f}\", flush=True)", "+    clf = HashedLogReg(DIM, device)", "+    loss, acc = clf.fit(bag, y)", "+    print(f\"  loss {loss:.4f}  balanced train acc {acc:.4f}\", flush=True)", " ", "     print(\"scoring pool ...\", flush=True)", "     scores = np.zeros(N, dtype=np.float32)", "     B = 20000", "     for s in range(0, N, B):", "         rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]", "-        scores[s:s + len(rows)] = clf.decision_function(rows_to_csr(rows))", "+        scores[s:s + len(rows)] = clf.decision_function(rows_to_bag(rows, device))", " ", "     print(\"applying quality penalties ...\", flush=True)", "     for i in range(N):"]}], "userModified": false, "replaceAll": false}
#12
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolEdit
args
{
  "replace_all": false,
  "file_path": "/workspace/submission/curate.py",
  "old_string": "    print(\"normalizing pool ...\", flush=True)\n    pool_toks = [norm_tokens(t) for t in texts]",
  "new_string": "    print(\"normalizing pool ...\", flush=True)\n    import os, pickle\n    cache = \"/tmp/pool_toks.pkl\"\n    if os.path.exists(cache):\n        pool_toks = pickle.load(open(cache, \"rb\"))\n    else:\n        pool_toks = [norm_tokens(t) for t in texts]\n        pickle.dump(pool_toks, open(cache, \"wb\"), protocol=4)"
}
Edit result
The file /workspace/submission/curate.py has been updated successfully. (file state is current in your context — no need to Read it back)

[metadata] {"filePath": "/workspace/submission/curate.py", "oldString": "    print(\"normalizing pool ...\", flush=True)\n    pool_toks = [norm_tokens(t) for t in texts]", "newString": "    print(\"normalizing pool ...\", flush=True)\n    import os, pickle\n    cache = \"/tmp/pool_toks.pkl\"\n    if os.path.exists(cache):\n        pool_toks = pickle.load(open(cache, \"rb\"))\n    else:\n        pool_toks = [norm_tokens(t) for t in texts]\n        pickle.dump(pool_toks, open(cache, \"wb\"), protocol=4)", "originalFile": "#!/usr/bin/env python3\n\"\"\"\nCurate /workspace/data/pool.jsonl for pretraining a 30M GPT under a 12M-token budget.\n\nSTATED CRITERION\n----------------\nRank every pool document by a single scalar\n\n    score(d) = log-odds that d was drawn from the high-quality multi-domain\n               target distribution rather than from the raw web pool,\n               estimated by a bag-of-words logistic regression,\n               minus penalties from cheap boilerplate/format heuristics.\n\nPositives for the classifier are recovered from the DISCLOSED dev target\n(`multi_dev.npy`, GPT-2 token ids) by decoding it back to text. Negatives are a\nrandom sample of the raw pool (which is ~94% not-target-like, so label noise is\nsmall and only shrinks the margin, it does not bias the direction).\n\nBoth sides are pushed through the SAME aggressive normalizer (lowercase,\nalphabetic word tokens only, wikitext `@-@ / @,@ / @.@` artifacts removed,\ndetokenized punctuation spacing, HTML tags stripped). This is essential: the\ntarget's Wikipedia slice carries wikitext formatting artifacts that no pool\ndocument has, so an un-normalized classifier would learn *formatting* and rank\nby an unusable surface cue. After normalization the only signal left is topical\nand register content.\n\nDocuments are emitted in descending score order (priority order), after\nnear-duplicate suppression, so the trainer fills its 12M tokens with the\nhighest-scoring, non-redundant documents.\n\"\"\"\nimport json, re, sys, hashlib\nimport numpy as np\nfrom collections import Counter\n\nPOOL = \"/workspace/data/pool.jsonl\"\nDEV = \"/workspace/data/multi_dev.npy\"\nOUT = \"/workspace/submission/selection.json\"\nSEED = 0\nN_NEG = 30000\nTARGET_DOCS = 30000  # ~3x the budget in docs, plenty of headroom\n\nrng = np.random.default_rng(SEED)\n\n# ---------------------------------------------------------------- normalizer\nTAG = re.compile(r\"<[^>]{1,80}>\")\nATAT = re.compile(r\"@([-,.])@\")\nSPACE_PUNCT = re.compile(r\"\\s+([,.;:!?)\\]}'\\\"])\")\nWORD = re.compile(r\"[a-z]+\")\n\ndef norm_tokens(t):\n    t = t.lower()\n    t = TAG.sub(\" \", t)\n    t = ATAT.sub(r\"\\1\", t)\n    t = SPACE_PUNCT.sub(r\"\\1\", t)\n    return WORD.findall(t)\n\n# ---------------------------------------------------------------- features\n# Hashed unigram bag-of-words. Fixed dimension, no vocabulary fitting pass.\nDIM = 2 ** 18\n_hcache = {}\n\ndef hcol(w):\n    c = _hcache.get(w)\n    if c is None:\n        c = int(hashlib.md5(w.encode()).hexdigest()[:8], 16) % DIM\n        _hcache[w] = c\n    return c\n\ndef featurize(toks, cap=3000):\n    \"\"\"L2-normalized sqrt-tf hashed bag of words over the first `cap` tokens.\"\"\"\n    cnt = Counter(toks[:cap])\n    idx = np.fromiter((hcol(w) for w in cnt), dtype=np.int64, count=len(cnt))\n    val = np.sqrt(np.fromiter(cnt.values(), dtype=np.float32, count=len(cnt)))\n    n = np.linalg.norm(val)\n    if n > 0:\n        val /= n\n    return idx, val\n\ndef rows_to_bag(rows, device):\n    \"\"\"Pack variable-length sparse rows into (flat_indices, offsets, weights) for\n    torch.nn.functional.embedding_bag -- a sparse matmul with no scipy needed.\"\"\"\n    import torch\n    offs = np.zeros(len(rows), dtype=np.int64)\n    t = 0\n    for i, (idx, _) in enumerate(rows):\n        offs[i] = t; t += len(idx)\n    flat = np.concatenate([r[0] for r in rows]) if rows else np.zeros(0, np.int64)\n    w = np.concatenate([r[1] for r in rows]) if rows else np.zeros(0, np.float32)\n    return (torch.from_numpy(flat).to(device),\n            torch.from_numpy(offs).to(device),\n            torch.from_numpy(w).to(device))\n\n\nclass HashedLogReg:\n    \"\"\"L2-regularized logistic regression over hashed bag-of-words, in torch.\"\"\"\n\n    def __init__(self, dim, device):\n        import torch\n        self.torch = torch\n        self.device = device\n        self.W = torch.zeros(dim, 1, device=device, requires_grad=True)\n        self.b = torch.zeros(1, device=device, requires_grad=True)\n\n    def _logits(self, bag):\n        F = self.torch.nn.functional\n        flat, offs, w = bag\n        return F.embedding_bag(flat, self.W, offs, mode=\"sum\",\n                               per_sample_weights=w).squeeze(1) + self.b\n\n    def fit(self, bag, y, epochs=300, lr=0.5, wd=1e-5):\n        torch = self.torch\n        y = torch.from_numpy(y.astype(np.float32)).to(self.device)\n        # class balancing: positives are far rarer than negatives\n        pw = (y == 0).sum() / (y == 1).sum().clamp(min=1)\n        w = torch.where(y > 0, pw, torch.ones_like(y))\n        opt = torch.optim.Adam([self.W, self.b], lr=lr)\n        for e in range(epochs):\n            opt.zero_grad()\n            z = self._logits(bag)\n            loss = (torch.nn.functional.binary_cross_entropy_with_logits(\n                z, y, reduction=\"none\") * w).mean() + wd * (self.W ** 2).sum()\n            loss.backward(); opt.step()\n        with torch.no_grad():\n            acc = (((self._logits(bag) > 0).float() == y).float() * w).sum() / w.sum()\n        return float(loss), float(acc)\n\n    def decision_function(self, bag):\n        with self.torch.no_grad():\n            return self._logits(bag).float().cpu().numpy()\n\n# ---------------------------------------------------------------- heuristics\nBAD_SUB = (\"javascript is disabled\", \"enable cookies\", \"click here to\",\n           \"all rights reserved\", \"terms of service\", \"privacy policy\",\n           \"add to cart\", \"sign up for our newsletter\", \"posted by\",\n           \"log in or register\", \"your browser\")\nNAVCHAR = set(\"|•·>[]{}\")\n\ndef quality_penalty(text, toks):\n    \"\"\"Cheap surface penalties for boilerplate / non-prose. Returns a value to\n    SUBTRACT from the classifier log-odds.\"\"\"\n    n = len(text)\n    if n == 0 or not toks:\n        return 99.0\n    p = 0.0\n    low = text[:4000].lower()\n    p += 0.25 * sum(s in low for s in BAD_SUB)\n    # word-character density: prose is high, nav/markup dumps are low\n    alpha = sum(c.isalpha() or c.isspace() for c in text[:4000]) / min(n, 4000)\n    if alpha < 0.80:\n        p += 4.0 * (0.80 - alpha)\n    # navigation-bar characters\n    nav = sum(c in NAVCHAR for c in text[:4000]) / min(n, 4000)\n    p += 20.0 * nav\n    # line structure: many very short lines = link lists / menus\n    lines = text[:8000].split(\"\\n\")\n    if len(lines) >= 8:\n        short = sum(len(l) < 40 for l in lines) / len(lines)\n        if short > 0.5:\n            p += 1.5 * (short - 0.5)\n    # uppercase shouting\n    letters = [c for c in text[:4000] if c.isalpha()]\n    if letters:\n        up = sum(c.isupper() for c in letters) / len(letters)\n        if up > 0.2:\n            p += 2.0 * (up - 0.2)\n    # lexical diversity: spam/SEO keyword stuffing repeats\n    if len(toks) >= 100:\n        ttr = len(set(toks[:1000])) / len(toks[:1000])\n        if ttr < 0.35:\n            p += 3.0 * (0.35 - ttr)\n    # very short documents carry little signal and waste an EOS\n    if len(toks) < 60:\n        p += 1.0\n    return p\n\n# ---------------------------------------------------------------- load target\ndef load_positives():\n    from transformers import AutoTokenizer\n    tok = AutoTokenizer.from_pretrained(\"gpt2\")\n    d = np.load(DEV).astype(np.int64)\n    cuts = np.where(d == 50256)[0]\n    docs, prev = [], 0\n    for c in cuts:\n        if c - prev > 32:\n            docs.append(tok.decode(d[prev:c]))\n        prev = c + 1\n    return docs\n\ndef main():\n    print(\"loading positives from dev target ...\", flush=True)\n    pos_txt = load_positives()\n    print(f\"  {len(pos_txt)} positive chunks\", flush=True)\n\n    print(\"loading pool ...\", flush=True)\n    ids, texts = [], []\n    with open(POOL) as f:\n        for line in f:\n            r = json.loads(line)\n            ids.append(r[\"id\"]); texts.append(r[\"text\"])\n    N = len(ids)\n    print(f\"  {N} pool docs\", flush=True)\n\n    print(\"normalizing pool ...\", flush=True)\n    pool_toks = [norm_tokens(t) for t in texts]\n\n    # ---- training set for the classifier\n    neg_idx = rng.choice(N, size=min(N_NEG, N), replace=False)\n    # Positives are ~350-token chunks; cap negatives to a comparable length so\n    # document length is not itself a discriminative feature.\n    pos_rows = [featurize(norm_tokens(t), cap=400) for t in pos_txt]\n    neg_rows = [featurize(pool_toks[i], cap=400) for i in neg_idx]\n\n    import torch\n    device = \"cuda\" if torch.cuda.is_available() else \"cpu\"\n    bag = rows_to_bag(pos_rows + neg_rows, device)\n    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n\n    print(\"fitting classifier ...\", flush=True)\n    clf = HashedLogReg(DIM, device)\n    loss, acc = clf.fit(bag, y)\n    print(f\"  loss {loss:.4f}  balanced train acc {acc:.4f}\", flush=True)\n\n    print(\"scoring pool ...\", flush=True)\n    scores = np.zeros(N, dtype=np.float32)\n    B = 20000\n    for s in range(0, N, B):\n        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]\n        scores[s:s + len(rows)] = clf.decision_function(rows_to_bag(rows, device))\n\n    print(\"applying quality penalties ...\", flush=True)\n    for i in range(N):\n        scores[i] -= quality_penalty(texts[i], pool_toks[i])\n\n    order = np.argsort(-scores)\n\n    print(\"near-duplicate suppression ...\", flush=True)\n    seen, sel = set(), []\n    for i in order:\n        tk = pool_toks[i]\n        if len(tk) < 40:\n            continue\n        # shingle fingerprint of the first prose window\n        key = hashlib.md5(\" \".join(tk[:50]).encode()).hexdigest()\n        if key in seen:\n            continue\n        seen.add(key)\n        sel.append(int(ids[i]))\n        if len(sel) >= TARGET_DOCS:\n            break\n\n    json.dump(sel, open(OUT, \"w\"))\n    print(f\"wrote {len(sel)} ids -> {OUT}\", flush=True)\n    np.save(\"/tmp/scores.npy\", scores)\n    np.save(\"/tmp/order.npy\", order)\n\nif __name__ == \"__main__\":\n    main()\n", "structuredPatch": [{"oldStart": 201, "oldLines": 7, "newStart": 201, "newLines": 13, "lines": ["     print(f\"  {N} pool docs\", flush=True)", " ", "     print(\"normalizing pool ...\", flush=True)", "-    pool_toks = [norm_tokens(t) for t in texts]", "+    import os, pickle", "+    cache = \"/tmp/pool_toks.pkl\"", "+    if os.path.exists(cache):", "+        pool_toks = pickle.load(open(cache, \"rb\"))", "+    else:", "+        pool_toks = [norm_tokens(t) for t in texts]", "+        pickle.dump(pool_toks, open(cache, \"wb\"), protocol=4)", " ", "     # ---- training set for the classifier", "     neg_idx = rng.choice(N, size=min(N_NEG, N), replace=False)"]}], "userModified": false, "replaceAll": false}
#13
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashRun curation v2
args
{
  "command": "time python submission/curate.py 2>&1 | grep -viE \"warning|futurew\" | tail -30",
  "description": "Run curation v2",
  "timeout": 1500000
}
Bash result
loading positives from dev target ...
  2645 positive chunks
loading pool ...
  182016 pool docs
normalizing pool ...
fitting classifier ...
Consider using tensor.detach() first. (Triggered internally at /pytorch/torch/csrc/autograd/generated/python_variable_methods.cpp:835.)
  return float(loss), float(acc)
  loss 0.3268  balanced train acc 0.9768
scoring pool ...
applying quality penalties ...
near-duplicate suppression ...
wrote 30000 ids -> /workspace/submission/selection.json

real	2m53.204s
user	2m42.420s
sys	0m3.990s

[stdout]
loading positives from dev target ...
  2645 positive chunks
loading pool ...
  182016 pool docs
normalizing pool ...
fitting classifier ...
Consider using tensor.detach() first. (Triggered internally at /pytorch/torch/csrc/autograd/generated/python_variable_methods.cpp:835.)
  return float(loss), float(acc)
  loss 0.3268  balanced train acc 0.9768
scoring pool ...
applying quality penalties ...
near-duplicate suppression ...
wrote 30000 ids -> /workspace/submission/selection.json

real	2m53.204s
user	2m42.420s
sys	0m3.990s
[metadata] {"noOutputExpected": false}
#14
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashStart dev eval run 1
args
{
  "command": "nohup bash dev_eval.sh > /tmp/eval1.log 2>&1 &\necho started",
  "description": "Start dev eval run 1"
}
Bash result
started

[stdout]
started
[metadata] {"noOutputExpected": false}
#15
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBash
args
{
  "command": "python -c \"\nimport json\nsel=json.load(open('submission/selection.json'))\nprint(len(sel), len(set(sel)))\ntxt={}\nimport io\nneed=set(sel[:5]+sel[5000:5002]+sel[20000:20002])\nfor line in open('data/pool.jsonl'):\n    r=json.loads(line)\n    if r['id'] in need: txt[r['id']]=r['text']\nfor k in [0,1,2,3,4]:\n    print('=== rank',k, repr(txt[sel[k]][:300]))\nprint('=== rank 5000', repr(txt[sel[5000]][:300]))\nprint('=== rank 20000', repr(txt[sel[20000]][:300]))\n\""
}
Bash result
30000 30000
=== rank 0 '<|endoftext|>Islamabad: Pakistan Army Chief General Ashfaq Parvez Kayani has been a major “obstacle” to an India-Pakistan deal on Kashmir, as both the neighbours were close to signing a historic agreement on several occasions.\nBritain’s Labour Government regarded General Kayani as a major “obstacle”'
=== rank 1 'Islamabad, December 25: Indian death row prisoner Kulbhushan Jadhav’s wife and mother arrived in Islamabad for a meeting with him at the Pakistan foreign affairs ministry, officials said.\nTV footage showed a convoy of around seven vehicles escorting Jadhav’s family in the city.\nA foreign office spok'
=== rank 2 '<|endoftext|>Ahead of its Foreign Minister\'s visit to Bangalore, China on Tuesday described the Kashmir issue as a question "left over by history" and highlighted the need for India and Pakistan to "properly" resolve it through dialouge.\n"The Kashmir issue is a question left over by history that\nsho'
=== rank 3 '.<|endoftext|>New Delhi, October 15, 2020: The Prime Minister Shri Narendra Modi, paid tributes to Dr APJ Abdul Kalam, the former President of India, on his Jayanti today.\nPrime Minister said, “Tributes to Dr. Kalam on his Jayanti. India can never forget his indelible contribution towards national d'
=== rank 4 '.<|endoftext|>Amid calls for war by the state-run media, China accused India of lying to the public on the border row and again warned New Delhi to withdraw troops to “avoid worsening of the situation”….A special report by Gaurav Sharma for Asian Lite News\nAs Beijing raised the decibel over the late'
=== rank 5000 'html<|endoftext|>What does the city of the future look like?\nJames Clyne gives us a look at his vision for the future with some stills from Minority Report. The concept for what Washington DC looks like in the background cityscape is a series of hyperstructures that nestle up to the Patomac. It look'
=== rank 20000 ' showed great potential right from the start of her legal career, graduating from the Advanced Diploma of Conveyancing at Ultimo College in 2002. She graduated with distinction and received the Alan West Award for the most outstanding conveyancing student in the same year.\nShe went on to pursue her '

[stdout]
30000 30000
=== rank 0 '<|endoftext|>Islamabad: Pakistan Army Chief General Ashfaq Parvez Kayani has been a major “obstacle” to an India-Pakistan deal on Kashmir, as both the neighbours were close to signing a historic agreement on several occasions.\nBritain’s Labour Government regarded General Kayani as a major “obstacle”'
=== rank 1 'Islamabad, December 25: Indian death row prisoner Kulbhushan Jadhav’s wife and mother arrived in Islamabad for a meeting with him at the Pakistan foreign affairs ministry, officials said.\nTV footage showed a convoy of around seven vehicles escorting Jadhav’s family in the city.\nA foreign office spok'
=== rank 2 '<|endoftext|>Ahead of its Foreign Minister\'s visit to Bangalore, China on Tuesday described the Kashmir issue as a question "left over by history" and highlighted the need for India and Pakistan to "properly" resolve it through dialouge.\n"The Kashmir issue is a question left over by history that\nsho'
=== rank 3 '.<|endoftext|>New Delhi, October 15, 2020: The Prime Minister Shri Narendra Modi, paid tributes to Dr APJ Abdul Kalam, the former President of India, on his Jayanti today.\nPrime Minister said, “Tributes to Dr. Kalam on his Jayanti. India can never forget his indelible contribution towards national d'
=== rank 4 '.<|endoftext|>Amid calls for war by the state-run media, China accused India of lying to the public on the border row and again warned New Delhi to withdraw troops to “avoid worsening of the situation”….A special report by Gaurav Sharma for Asian Lite News\nAs Beijing raised the decibel over the late'
=== rank 5000 'html<|endoftext|>What does the city of the future look like?\nJames Clyne gives us a look at his vision for the future with some stills from Minority Report. The concept for what Washington DC looks like in the background cityscape is a series of hyperstructures that nestle up to the Patomac. It look'
=== rank 20000 ' showed great potential right from the start of her legal career, graduating from the Advanced Diploma of Conveyancing at Ultimo College in 2002. She graduated with distinction and received the Alan West Award for the most outstanding conveyancing student in the same year.\nShe went on to pursue her '
[metadata] {"noOutputExpected": false}
#16
narration

Top ranks are dominated by one register (Indian news) — the classifier collapsed onto the most separable slice. Need domain-balanced selection. Checking dev composition:

toolBash
args
{
  "command": "python -c \"\nimport numpy as np,re\nfrom transformers import AutoTokenizer\ntok=AutoTokenizer.from_pretrained('gpt2')\nd=np.load('data/multi_dev.npy').astype(np.int64)\ncuts=np.where(d==50256)[0]; docs=[];prev=0\nfor c in cuts:\n    if c-prev>32: docs.append(tok.decode(d[prev:c]))\n    prev=c+1\ndef dom(t):\n    if '@-@' in t or '@,@' in t or '@.@' in t: return 'wiki'\n    if '<p>' in t or '</p>' in t or '<pre>' in t or '<code>' in t: return 'qa'\n    # detok spacing typical of wikitext\n    if len(re.findall(r' [,.]',t))/max(1,len(t))>0.004: return 'wiki'\n    return 'other'\nfrom collections import Counter\nc=Counter(dom(t) for t in docs); print(c)\noth=[t for t in docs if dom(t)=='other']\nfor i in range(0,len(oth),len(oth)//8): print('---',repr(oth[i][:200]))\n\" 2>&1 | grep -v Warning; echo ===; cat /tmp/eval1.log | tail -3"
}
Bash result
Counter({'wiki': 1661, 'other': 626, 'qa': 358})
--- ' With Aruban investigators citing what was described as newly discovered evidence , Joran van der Sloot and Satish and Deepak Kalpoe were rearrested November 21 , 2007 , on suspicion of involvement in'
--- 'William Langewiesche was granted such wholesale access for a simple reason: the people in charge were familiar with his work in these pages, work that has produced dramatic narratives built around hum'
--- 'The CRISPR-Cas9 system was first used to edit genes in 2013 but since then its use has exploded. What makes the tool so special in the field of genetic research?\n\n‘The thing that is remarkably differe'
--- "When it comes to the final hurrah this summer, New York and Las Vegas are shaping up to be the busiest Labor Day destinations in the US.That's according to the full-service online travel site Expedia,"
--- 'Kyunki Saas Bhi Kabhi Bahu Thi proved to be a game changer for Indian television. With more than 1800 episodes, the show which launched at the start of the millennium, aired for 8 years and completed '
--- 'CNN name, logo and all associated elements ® and © 2016 Cable News Network LP, LLLP. A Time Warner Company. All rights reserved. CNN and the CNN logo are registered marks of Cable News Network, LP LLL'
--- ": A British Muslim man was Friday sentenced to six years' imprisonment by a UK court for showing an Islamic State (ISIS) beheading video to schoolchildren.Zameer Ghumra was found guilty of disseminati"
--- 'Wooing farmers ahead of the 2019 Lok Sabha polls, the Centre on Wednesday hiked the minimum support price for paddy by a record Rs 200 per quintal with Prime Minister Narendra Modi calling it historic'
--- 'T 2569 - A friend, a colleague, a writer director & mad company makes this short film .. unique, Satyajit Ray story https://t.co/gJKNamIaoE pic.twitter.com/wpykiDyAIL — Amitabh Bachchan (@SrBachchan) '
===
Token indices sequence length is longer than the specified maximum sequence length for this model (1096 > 1024). Running this sequence through the model will result in indexing errors

[stdout]
Counter({'wiki': 1661, 'other': 626, 'qa': 358})
--- ' With Aruban investigators citing what was described as newly discovered evidence , Joran van der Sloot and Satish and Deepak Kalpoe were rearrested November 21 , 2007 , on suspicion of involvement in'
--- 'William Langewiesche was granted such wholesale access for a simple reason: the people in charge were familiar with his work in these pages, work that has produced dramatic narratives built around hum'
--- 'The CRISPR-Cas9 system was first used to edit genes in 2013 but since then its use has exploded. What makes the tool so special in the field of genetic research?\n\n‘The thing that is remarkably differe'
--- "When it comes to the final hurrah this summer, New York and Las Vegas are shaping up to be the busiest Labor Day destinations in the US.That's according to the full-service online travel site Expedia,"
--- 'Kyunki Saas Bhi Kabhi Bahu Thi proved to be a game changer for Indian television. With more than 1800 episodes, the show which launched at the start of the millennium, aired for 8 years and completed '
--- 'CNN name, logo and all associated elements ® and © 2016 Cable News Network LP, LLLP. A Time Warner Company. All rights reserved. CNN and the CNN logo are registered marks of Cable News Network, LP LLL'
--- ": A British Muslim man was Friday sentenced to six years' imprisonment by a UK court for showing an Islamic State (ISIS) beheading video to schoolchildren.Zameer Ghumra was found guilty of disseminati"
--- 'Wooing farmers ahead of the 2019 Lok Sabha polls, the Centre on Wednesday hiked the minimum support price for paddy by a record Rs 200 per quintal with Prime Minister Narendra Modi calling it historic'
--- 'T 2569 - A friend, a colleague, a writer director & mad company makes this short film .. unique, Satyajit Ray story https://t.co/gJKNamIaoE pic.twitter.com/wpykiDyAIL — Amitabh Bachchan (@SrBachchan) '
===
Token indices sequence length is longer than the specified maximum sequence length for this model (1096 > 1024). Running this sequence through the model will result in indexing errors
[metadata] {"noOutputExpected": false}
#17
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBash
args
{
  "command": "cat /workspace/.timer/remaining_secs; python -c \"\nimport numpy as np,re\nfrom transformers import AutoTokenizer\ntok=AutoTokenizer.from_pretrained('gpt2')\nd=np.load('data/multi_dev.npy').astype(np.int64)\ncuts=np.where(d==50256)[0]; docs=[];prev=0\nfor c in cuts:\n    if c-prev>32: docs.append((tok.decode(d[prev:c]), c-prev))\n    prev=c+1\ndef dom(t):\n    if re.search(r'@[-,.]@',t): return 'wiki'\n    if re.search(r'</?(p|pre|code|blockquote|ul|li)>',t): return 'qa'\n    return 'other'\nfrom collections import Counter\nct=Counter(); tk=Counter()\nfor t,n in docs: ct[dom(t)]+=1; tk[dom(t)]+=n\nprint(ct); print(tk)\n# among 'other', how many look like wikitext detok (space before period)?\noth=[t for t,n in docs if dom(t)=='other']\nsp=sum(1 for t in oth if len(re.findall(r' \\.',t))>3)\nprint('other w/ detok spacing:',sp,'of',len(oth))\n\" 2>&1 | grep -v Warning"
}
Bash result
4799
Counter({'other': 1326, 'wiki': 961, 'qa': 358})
Counter({'other': 582518, 'qa': 249474, 'wiki': 163347})
other w/ detok spacing: 394 of 1326

[stdout]
4799
Counter({'other': 1326, 'wiki': 961, 'qa': 358})
Counter({'other': 582518, 'qa': 249474, 'wiki': 163347})
other w/ detok spacing: 394 of 1326
[metadata] {"noOutputExpected": false}
#18
narration

Composition by tokens ≈ 25% wiki / 25% QA / 50% news+web prose. Rebuilding with per-domain classifiers and proportional interleaving.

toolEdit
args
{
  "replace_all": false,
  "file_path": "/workspace/submission/curate.py",
  "old_string": "def load_positives():\n    from transformers import AutoTokenizer\n    tok = AutoTokenizer.from_pretrained(\"gpt2\")\n    d = np.load(DEV).astype(np.int64)\n    cuts = np.where(d == 50256)[0]\n    docs, prev = [], 0\n    for c in cuts:\n        if c - prev > 32:\n            docs.append(tok.decode(d[prev:c]))\n        prev = c + 1\n    return docs",
  "new_string": "ATMARK = re.compile(r\"@[-,.]@\")\nHTMLQA = re.compile(r\"</?(p|pre|code|blockquote|ul|li)>\")\nDETOK = re.compile(r\" [.,]\")\n\ndef dev_domain(t):\n    \"\"\"Split the disclosed target into its constituent registers.\n\n    The target is documented as equal parts encyclopedic / general high-quality\n    web prose / news / technical Q&A. Two of the four are identifiable from\n    unambiguous surface markers: the encyclopedic slice is wikitext-derived and\n    carries `@-@`/`@,@`/`@.@` number-and-hyphen artifacts plus detokenized\n    punctuation spacing; the technical Q&A slice is StackExchange-derived and\n    carries raw HTML block tags. News and general web prose are not separable\n    from each other by surface cues, so they are handled as one group -- which\n    is fine, because they get one shared (50%) budget share anyway.\n    \"\"\"\n    if ATMARK.search(t) or len(DETOK.findall(t)) > 3:\n        return \"wiki\"\n    if HTMLQA.search(t):\n        return \"qa\"\n    return \"webnews\"\n\ndef load_positives():\n    from transformers import AutoTokenizer\n    tok = AutoTokenizer.from_pretrained(\"gpt2\")\n    d = np.load(DEV).astype(np.int64)\n    cuts = np.where(d == 50256)[0]\n    docs, prev = [], 0\n    for c in cuts:\n        if c - prev > 32:\n            docs.append(tok.decode(d[prev:c]))\n        prev = c + 1\n    groups = {}\n    for t in docs:\n        groups.setdefault(dev_domain(t), []).append(t)\n    return groups"
}
Edit result
The file /workspace/submission/curate.py has been updated successfully. (file state is current in your context — no need to Read it back)

[metadata] {"filePath": "/workspace/submission/curate.py", "oldString": "def load_positives():\n    from transformers import AutoTokenizer\n    tok = AutoTokenizer.from_pretrained(\"gpt2\")\n    d = np.load(DEV).astype(np.int64)\n    cuts = np.where(d == 50256)[0]\n    docs, prev = [], 0\n    for c in cuts:\n        if c - prev > 32:\n            docs.append(tok.decode(d[prev:c]))\n        prev = c + 1\n    return docs", "newString": "ATMARK = re.compile(r\"@[-,.]@\")\nHTMLQA = re.compile(r\"</?(p|pre|code|blockquote|ul|li)>\")\nDETOK = re.compile(r\" [.,]\")\n\ndef dev_domain(t):\n    \"\"\"Split the disclosed target into its constituent registers.\n\n    The target is documented as equal parts encyclopedic / general high-quality\n    web prose / news / technical Q&A. Two of the four are identifiable from\n    unambiguous surface markers: the encyclopedic slice is wikitext-derived and\n    carries `@-@`/`@,@`/`@.@` number-and-hyphen artifacts plus detokenized\n    punctuation spacing; the technical Q&A slice is StackExchange-derived and\n    carries raw HTML block tags. News and general web prose are not separable\n    from each other by surface cues, so they are handled as one group -- which\n    is fine, because they get one shared (50%) budget share anyway.\n    \"\"\"\n    if ATMARK.search(t) or len(DETOK.findall(t)) > 3:\n        return \"wiki\"\n    if HTMLQA.search(t):\n        return \"qa\"\n    return \"webnews\"\n\ndef load_positives():\n    from transformers import AutoTokenizer\n    tok = AutoTokenizer.from_pretrained(\"gpt2\")\n    d = np.load(DEV).astype(np.int64)\n    cuts = np.where(d == 50256)[0]\n    docs, prev = [], 0\n    for c in cuts:\n        if c - prev > 32:\n            docs.append(tok.decode(d[prev:c]))\n        prev = c + 1\n    groups = {}\n    for t in docs:\n        groups.setdefault(dev_domain(t), []).append(t)\n    return groups", "originalFile": "#!/usr/bin/env python3\n\"\"\"\nCurate /workspace/data/pool.jsonl for pretraining a 30M GPT under a 12M-token budget.\n\nSTATED CRITERION\n----------------\nRank every pool document by a single scalar\n\n    score(d) = log-odds that d was drawn from the high-quality multi-domain\n               target distribution rather than from the raw web pool,\n               estimated by a bag-of-words logistic regression,\n               minus penalties from cheap boilerplate/format heuristics.\n\nPositives for the classifier are recovered from the DISCLOSED dev target\n(`multi_dev.npy`, GPT-2 token ids) by decoding it back to text. Negatives are a\nrandom sample of the raw pool (which is ~94% not-target-like, so label noise is\nsmall and only shrinks the margin, it does not bias the direction).\n\nBoth sides are pushed through the SAME aggressive normalizer (lowercase,\nalphabetic word tokens only, wikitext `@-@ / @,@ / @.@` artifacts removed,\ndetokenized punctuation spacing, HTML tags stripped). This is essential: the\ntarget's Wikipedia slice carries wikitext formatting artifacts that no pool\ndocument has, so an un-normalized classifier would learn *formatting* and rank\nby an unusable surface cue. After normalization the only signal left is topical\nand register content.\n\nDocuments are emitted in descending score order (priority order), after\nnear-duplicate suppression, so the trainer fills its 12M tokens with the\nhighest-scoring, non-redundant documents.\n\"\"\"\nimport json, re, sys, hashlib\nimport numpy as np\nfrom collections import Counter\n\nPOOL = \"/workspace/data/pool.jsonl\"\nDEV = \"/workspace/data/multi_dev.npy\"\nOUT = \"/workspace/submission/selection.json\"\nSEED = 0\nN_NEG = 30000\nTARGET_DOCS = 30000  # ~3x the budget in docs, plenty of headroom\n\nrng = np.random.default_rng(SEED)\n\n# ---------------------------------------------------------------- normalizer\nTAG = re.compile(r\"<[^>]{1,80}>\")\nATAT = re.compile(r\"@([-,.])@\")\nSPACE_PUNCT = re.compile(r\"\\s+([,.;:!?)\\]}'\\\"])\")\nWORD = re.compile(r\"[a-z]+\")\n\ndef norm_tokens(t):\n    t = t.lower()\n    t = TAG.sub(\" \", t)\n    t = ATAT.sub(r\"\\1\", t)\n    t = SPACE_PUNCT.sub(r\"\\1\", t)\n    return WORD.findall(t)\n\n# ---------------------------------------------------------------- features\n# Hashed unigram bag-of-words. Fixed dimension, no vocabulary fitting pass.\nDIM = 2 ** 18\n_hcache = {}\n\ndef hcol(w):\n    c = _hcache.get(w)\n    if c is None:\n        c = int(hashlib.md5(w.encode()).hexdigest()[:8], 16) % DIM\n        _hcache[w] = c\n    return c\n\ndef featurize(toks, cap=3000):\n    \"\"\"L2-normalized sqrt-tf hashed bag of words over the first `cap` tokens.\"\"\"\n    cnt = Counter(toks[:cap])\n    idx = np.fromiter((hcol(w) for w in cnt), dtype=np.int64, count=len(cnt))\n    val = np.sqrt(np.fromiter(cnt.values(), dtype=np.float32, count=len(cnt)))\n    n = np.linalg.norm(val)\n    if n > 0:\n        val /= n\n    return idx, val\n\ndef rows_to_bag(rows, device):\n    \"\"\"Pack variable-length sparse rows into (flat_indices, offsets, weights) for\n    torch.nn.functional.embedding_bag -- a sparse matmul with no scipy needed.\"\"\"\n    import torch\n    offs = np.zeros(len(rows), dtype=np.int64)\n    t = 0\n    for i, (idx, _) in enumerate(rows):\n        offs[i] = t; t += len(idx)\n    flat = np.concatenate([r[0] for r in rows]) if rows else np.zeros(0, np.int64)\n    w = np.concatenate([r[1] for r in rows]) if rows else np.zeros(0, np.float32)\n    return (torch.from_numpy(flat).to(device),\n            torch.from_numpy(offs).to(device),\n            torch.from_numpy(w).to(device))\n\n\nclass HashedLogReg:\n    \"\"\"L2-regularized logistic regression over hashed bag-of-words, in torch.\"\"\"\n\n    def __init__(self, dim, device):\n        import torch\n        self.torch = torch\n        self.device = device\n        self.W = torch.zeros(dim, 1, device=device, requires_grad=True)\n        self.b = torch.zeros(1, device=device, requires_grad=True)\n\n    def _logits(self, bag):\n        F = self.torch.nn.functional\n        flat, offs, w = bag\n        return F.embedding_bag(flat, self.W, offs, mode=\"sum\",\n                               per_sample_weights=w).squeeze(1) + self.b\n\n    def fit(self, bag, y, epochs=300, lr=0.5, wd=1e-5):\n        torch = self.torch\n        y = torch.from_numpy(y.astype(np.float32)).to(self.device)\n        # class balancing: positives are far rarer than negatives\n        pw = (y == 0).sum() / (y == 1).sum().clamp(min=1)\n        w = torch.where(y > 0, pw, torch.ones_like(y))\n        opt = torch.optim.Adam([self.W, self.b], lr=lr)\n        for e in range(epochs):\n            opt.zero_grad()\n            z = self._logits(bag)\n            loss = (torch.nn.functional.binary_cross_entropy_with_logits(\n                z, y, reduction=\"none\") * w).mean() + wd * (self.W ** 2).sum()\n            loss.backward(); opt.step()\n        with torch.no_grad():\n            acc = (((self._logits(bag) > 0).float() == y).float() * w).sum() / w.sum()\n        return float(loss), float(acc)\n\n    def decision_function(self, bag):\n        with self.torch.no_grad():\n            return self._logits(bag).float().cpu().numpy()\n\n# ---------------------------------------------------------------- heuristics\nBAD_SUB = (\"javascript is disabled\", \"enable cookies\", \"click here to\",\n           \"all rights reserved\", \"terms of service\", \"privacy policy\",\n           \"add to cart\", \"sign up for our newsletter\", \"posted by\",\n           \"log in or register\", \"your browser\")\nNAVCHAR = set(\"|•·>[]{}\")\n\ndef quality_penalty(text, toks):\n    \"\"\"Cheap surface penalties for boilerplate / non-prose. Returns a value to\n    SUBTRACT from the classifier log-odds.\"\"\"\n    n = len(text)\n    if n == 0 or not toks:\n        return 99.0\n    p = 0.0\n    low = text[:4000].lower()\n    p += 0.25 * sum(s in low for s in BAD_SUB)\n    # word-character density: prose is high, nav/markup dumps are low\n    alpha = sum(c.isalpha() or c.isspace() for c in text[:4000]) / min(n, 4000)\n    if alpha < 0.80:\n        p += 4.0 * (0.80 - alpha)\n    # navigation-bar characters\n    nav = sum(c in NAVCHAR for c in text[:4000]) / min(n, 4000)\n    p += 20.0 * nav\n    # line structure: many very short lines = link lists / menus\n    lines = text[:8000].split(\"\\n\")\n    if len(lines) >= 8:\n        short = sum(len(l) < 40 for l in lines) / len(lines)\n        if short > 0.5:\n            p += 1.5 * (short - 0.5)\n    # uppercase shouting\n    letters = [c for c in text[:4000] if c.isalpha()]\n    if letters:\n        up = sum(c.isupper() for c in letters) / len(letters)\n        if up > 0.2:\n            p += 2.0 * (up - 0.2)\n    # lexical diversity: spam/SEO keyword stuffing repeats\n    if len(toks) >= 100:\n        ttr = len(set(toks[:1000])) / len(toks[:1000])\n        if ttr < 0.35:\n            p += 3.0 * (0.35 - ttr)\n    # very short documents carry little signal and waste an EOS\n    if len(toks) < 60:\n        p += 1.0\n    return p\n\n# ---------------------------------------------------------------- load target\ndef load_positives():\n    from transformers import AutoTokenizer\n    tok = AutoTokenizer.from_pretrained(\"gpt2\")\n    d = np.load(DEV).astype(np.int64)\n    cuts = np.where(d == 50256)[0]\n    docs, prev = [], 0\n    for c in cuts:\n        if c - prev > 32:\n            docs.append(tok.decode(d[prev:c]))\n        prev = c + 1\n    return docs\n\ndef main():\n    print(\"loading positives from dev target ...\", flush=True)\n    pos_txt = load_positives()\n    print(f\"  {len(pos_txt)} positive chunks\", flush=True)\n\n    print(\"loading pool ...\", flush=True)\n    ids, texts = [], []\n    with open(POOL) as f:\n        for line in f:\n            r = json.loads(line)\n            ids.append(r[\"id\"]); texts.append(r[\"text\"])\n    N = len(ids)\n    print(f\"  {N} pool docs\", flush=True)\n\n    print(\"normalizing pool ...\", flush=True)\n    import os, pickle\n    cache = \"/tmp/pool_toks.pkl\"\n    if os.path.exists(cache):\n        pool_toks = pickle.load(open(cache, \"rb\"))\n    else:\n        pool_toks = [norm_tokens(t) for t in texts]\n        pickle.dump(pool_toks, open(cache, \"wb\"), protocol=4)\n\n    # ---- training set for the classifier\n    neg_idx = rng.choice(N, size=min(N_NEG, N), replace=False)\n    # Positives are ~350-token chunks; cap negatives to a comparable length so\n    # document length is not itself a discriminative feature.\n    pos_rows = [featurize(norm_tokens(t), cap=400) for t in pos_txt]\n    neg_rows = [featurize(pool_toks[i], cap=400) for i in neg_idx]\n\n    import torch\n    device = \"cuda\" if torch.cuda.is_available() else \"cpu\"\n    bag = rows_to_bag(pos_rows + neg_rows, device)\n    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n\n    print(\"fitting classifier ...\", flush=True)\n    clf = HashedLogReg(DIM, device)\n    loss, acc = clf.fit(bag, y)\n    print(f\"  loss {loss:.4f}  balanced train acc {acc:.4f}\", flush=True)\n\n    print(\"scoring pool ...\", flush=True)\n    scores = np.zeros(N, dtype=np.float32)\n    B = 20000\n    for s in range(0, N, B):\n        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]\n        scores[s:s + len(rows)] = clf.decision_function(rows_to_bag(rows, device))\n\n    print(\"applying quality penalties ...\", flush=True)\n    for i in range(N):\n        scores[i] -= quality_penalty(texts[i], pool_toks[i])\n\n    order = np.argsort(-scores)\n\n    print(\"near-duplicate suppression ...\", flush=True)\n    seen, sel = set(), []\n    for i in order:\n        tk = pool_toks[i]\n        if len(tk) < 40:\n            continue\n        # shingle fingerprint of the first prose window\n        key = hashlib.md5(\" \".join(tk[:50]).encode()).hexdigest()\n        if key in seen:\n            continue\n        seen.add(key)\n        sel.append(int(ids[i]))\n        if len(sel) >= TARGET_DOCS:\n            break\n\n    json.dump(sel, open(OUT, \"w\"))\n    print(f\"wrote {len(sel)} ids -> {OUT}\", flush=True)\n    np.save(\"/tmp/scores.npy\", scores)\n    np.save(\"/tmp/order.npy\", order)\n\nif __name__ == \"__main__\":\n    main()\n", "structuredPatch": [{"oldStart": 174, "oldLines": 6, "newStart": 174, "newLines": 28, "lines": ["     return p", " ", " # ---------------------------------------------------------------- load target", "+ATMARK = re.compile(r\"@[-,.]@\")", "+HTMLQA = re.compile(r\"</?(p|pre|code|blockquote|ul|li)>\")", "+DETOK = re.compile(r\" [.,]\")", "+", "+def dev_domain(t):", "+    \"\"\"Split the disclosed target into its constituent registers.", "+", "+    The target is documented as equal parts encyclopedic / general high-quality", "+    web prose / news / technical Q&A. Two of the four are identifiable from", "+    unambiguous surface markers: the encyclopedic slice is wikitext-derived and", "+    carries `@-@`/`@,@`/`@.@` number-and-hyphen artifacts plus detokenized", "+    punctuation spacing; the technical Q&A slice is StackExchange-derived and", "+    carries raw HTML block tags. News and general web prose are not separable", "+    from each other by surface cues, so they are handled as one group -- which", "+    is fine, because they get one shared (50%) budget share anyway.", "+    \"\"\"", "+    if ATMARK.search(t) or len(DETOK.findall(t)) > 3:", "+        return \"wiki\"", "+    if HTMLQA.search(t):", "+        return \"qa\"", "+    return \"webnews\"", "+", " def load_positives():", "     from transformers import AutoTokenizer", "     tok = AutoTokenizer.from_pretrained(\"gpt2\")"]}, {"oldStart": 184, "oldLines": 7, "newStart": 206, "newLines": 10, "lines": ["         if c - prev > 32:", "             docs.append(tok.decode(d[prev:c]))", "         prev = c + 1", "-    return docs", "+    groups = {}", "+    for t in docs:", "+        groups.setdefault(dev_domain(t), []).append(t)", "+    return groups", " ", " def main():", "     print(\"loading positives from dev target ...\", flush=True)"]}], "userModified": false, "replaceAll": false}
#19
narration

Now the balanced selection loop:

toolEdit
args
{
  "replace_all": false,
  "file_path": "/workspace/submission/curate.py",
  "old_string": "    print(\"loading positives from dev target ...\", flush=True)\n    pos_txt = load_positives()\n    print(f\"  {len(pos_txt)} positive chunks\", flush=True)",
  "new_string": "    print(\"loading positives from dev target ...\", flush=True)\n    groups = load_positives()\n    for k, v in groups.items():\n        print(f\"  {k}: {len(v)} chunks\", flush=True)"
}
Edit result
The file /workspace/submission/curate.py has been updated successfully. (file state is current in your context — no need to Read it back)

[metadata] {"filePath": "/workspace/submission/curate.py", "oldString": "    print(\"loading positives from dev target ...\", flush=True)\n    pos_txt = load_positives()\n    print(f\"  {len(pos_txt)} positive chunks\", flush=True)", "newString": "    print(\"loading positives from dev target ...\", flush=True)\n    groups = load_positives()\n    for k, v in groups.items():\n        print(f\"  {k}: {len(v)} chunks\", flush=True)", "originalFile": null, "structuredPatch": [{"oldStart": 213, "oldLines": 8, "newStart": 213, "newLines": 9, "lines": [" ", " def main():", "     print(\"loading positives from dev target ...\", flush=True)", "-    pos_txt = load_positives()", "-    print(f\"  {len(pos_txt)} positive chunks\", flush=True)", "+    groups = load_positives()", "+    for k, v in groups.items():", "+        print(f\"  {k}: {len(v)} chunks\", flush=True)", " ", "     print(\"loading pool ...\", flush=True)", "     ids, texts = [], []"]}], "userModified": false, "replaceAll": false}
#20
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolEdit
args
{
  "replace_all": false,
  "file_path": "/workspace/submission/curate.py",
  "old_string": "    # ---- training set for the classifier\n    neg_idx = rng.choice(N, size=min(N_NEG, N), replace=False)\n    # Positives are ~350-token chunks; cap negatives to a comparable length so\n    # document length is not itself a discriminative feature.\n    pos_rows = [featurize(norm_tokens(t), cap=400) for t in pos_txt]\n    neg_rows = [featurize(pool_toks[i], cap=400) for i in neg_idx]\n\n    import torch\n    device = \"cuda\" if torch.cuda.is_available() else \"cpu\"\n    bag = rows_to_bag(pos_rows + neg_rows, device)\n    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n\n    print(\"fitting classifier ...\", flush=True)\n    clf = HashedLogReg(DIM, device)\n    loss, acc = clf.fit(bag, y)\n    print(f\"  loss {loss:.4f}  balanced train acc {acc:.4f}\", flush=True)\n\n    print(\"scoring pool ...\", flush=True)\n    scores = np.zeros(N, dtype=np.float32)\n    B = 20000\n    for s in range(0, N, B):\n        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]\n        scores[s:s + len(rows)] = clf.decision_function(rows_to_bag(rows, device))\n\n    print(\"applying quality penalties ...\", flush=True)\n    for i in range(N):\n        scores[i] -= quality_penalty(texts[i], pool_toks[i])\n\n    order = np.argsort(-scores)\n\n    print(\"near-duplicate suppression ...\", flush=True)\n    seen, sel = set(), []\n    for i in order:\n        tk = pool_toks[i]\n        if len(tk) < 40:\n            continue\n        # shingle fingerprint of the first prose window\n        key = hashlib.md5(\" \".join(tk[:50]).encode()).hexdigest()\n        if key in seen:\n            continue\n        seen.add(key)\n        sel.append(int(ids[i]))\n        if len(sel) >= TARGET_DOCS:\n            break\n\n    json.dump(sel, open(OUT, \"w\"))\n    print(f\"wrote {len(sel)} ids -> {OUT}\", flush=True)\n    np.save(\"/tmp/scores.npy\", scores)\n    np.save(\"/tmp/order.npy\", order)",
  "new_string": "    import torch\n    device = \"cuda\" if torch.cuda.is_available() else \"cpu\"\n\n    # Shared negatives: a random pool sample. The pool is overwhelmingly\n    # not-target-like, so treating it wholesale as the negative class costs only\n    # a little margin and no directional bias.\n    neg_idx = rng.choice(N, size=min(N_NEG, N), replace=False)\n    # Positives are ~350-token chunks; cap negatives to a comparable length so\n    # that document length is not itself a discriminative feature.\n    neg_rows = [featurize(pool_toks[i], cap=400) for i in neg_idx]\n\n    print(\"precomputing pool features ...\", flush=True)\n    pool_rows = [featurize(tk, cap=1500) for tk in pool_toks]\n\n    print(\"penalties ...\", flush=True)\n    pen = np.fromiter((quality_penalty(texts[i], pool_toks[i]) for i in range(N)),\n                      dtype=np.float32, count=N)\n\n    # One classifier per target register; each ranks the whole pool for\n    # \"looks like THIS register\".\n    dom_scores = {}\n    for dom in (\"wiki\", \"qa\", \"webnews\"):\n        pos_rows = [featurize(norm_tokens(t), cap=400) for t in groups[dom]]\n        bag = rows_to_bag(pos_rows + neg_rows, device)\n        y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n        clf = HashedLogReg(DIM, device)\n        loss, acc = clf.fit(bag, y)\n        s = np.zeros(N, dtype=np.float32)\n        B = 20000\n        for st in range(0, N, B):\n            s[st:st + B] = clf.decision_function(\n                rows_to_bag(pool_rows[st:st + B], device))\n        dom_scores[dom] = s - pen\n        print(f\"  {dom}: loss {loss:.4f} bal-acc {acc:.4f}\", flush=True)\n\n    # Token-count estimate for budgeting (GPT-2 BPE averages ~4 chars/token).\n    est_tok = np.fromiter((len(t) / 4.0 + 1 for t in texts), dtype=np.float32, count=N)\n\n    # Budget shares, matching the measured token composition of the disclosed\n    # target: encyclopedic 1/4, technical Q&A 1/4, news + general web prose 1/2.\n    SHARE = {\"wiki\": 0.25, \"qa\": 0.25, \"webnews\": 0.50}\n\n    orders = {d: np.argsort(-dom_scores[d]) for d in SHARE}\n    cursor = {d: 0 for d in SHARE}\n    taken_tok = {d: 0.0 for d in SHARE}\n    seen, sel, used = set(), [], set()\n    # Emit enough for several times the 12M budget so ordering, not length,\n    # decides what the trainer sees.\n    GOAL = 12_000_000 * 3.0\n\n    def draw(dom):\n        \"\"\"Pop the next unused, non-duplicate doc from this domain's ranking.\"\"\"\n        o = orders[dom]\n        while cursor[dom] < N:\n            i = int(o[cursor[dom]]); cursor[dom] += 1\n            if i in used:\n                continue\n            tk = pool_toks[i]\n            if len(tk) < 40:\n                continue\n            key = hashlib.md5(\" \".join(tk[:50]).encode()).hexdigest()\n            if key in seen:\n                continue\n            seen.add(key); used.add(i)\n            return i\n        return None\n\n    print(\"interleaving domains to budget shares ...\", flush=True)\n    total = 0.0\n    alive = set(SHARE)\n    while total < GOAL and alive:\n        # take from whichever domain is furthest behind its target share\n        dom = min(alive, key=lambda d: taken_tok[d] / SHARE[d])\n        i = draw(dom)\n        if i is None:\n            alive.discard(dom); continue\n        sel.append(int(ids[i]))\n        taken_tok[dom] += float(est_tok[i]); total += float(est_tok[i])\n\n    print(\"  est tokens per domain:\",\n          {d: int(v) for d, v in taken_tok.items()}, flush=True)\n    json.dump(sel, open(OUT, \"w\"))\n    print(f\"wrote {len(sel)} ids -> {OUT}\", flush=True)"
}
Edit result
The file /workspace/submission/curate.py has been updated successfully. (file state is current in your context — no need to Read it back)

[metadata] {"filePath": "/workspace/submission/curate.py", "oldString": "    # ---- training set for the classifier\n    neg_idx = rng.choice(N, size=min(N_NEG, N), replace=False)\n    # Positives are ~350-token chunks; cap negatives to a comparable length so\n    # document length is not itself a discriminative feature.\n    pos_rows = [featurize(norm_tokens(t), cap=400) for t in pos_txt]\n    neg_rows = [featurize(pool_toks[i], cap=400) for i in neg_idx]\n\n    import torch\n    device = \"cuda\" if torch.cuda.is_available() else \"cpu\"\n    bag = rows_to_bag(pos_rows + neg_rows, device)\n    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n\n    print(\"fitting classifier ...\", flush=True)\n    clf = HashedLogReg(DIM, device)\n    loss, acc = clf.fit(bag, y)\n    print(f\"  loss {loss:.4f}  balanced train acc {acc:.4f}\", flush=True)\n\n    print(\"scoring pool ...\", flush=True)\n    scores = np.zeros(N, dtype=np.float32)\n    B = 20000\n    for s in range(0, N, B):\n        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]\n        scores[s:s + len(rows)] = clf.decision_function(rows_to_bag(rows, device))\n\n    print(\"applying quality penalties ...\", flush=True)\n    for i in range(N):\n        scores[i] -= quality_penalty(texts[i], pool_toks[i])\n\n    order = np.argsort(-scores)\n\n    print(\"near-duplicate suppression ...\", flush=True)\n    seen, sel = set(), []\n    for i in order:\n        tk = pool_toks[i]\n        if len(tk) < 40:\n            continue\n        # shingle fingerprint of the first prose window\n        key = hashlib.md5(\" \".join(tk[:50]).encode()).hexdigest()\n        if key in seen:\n            continue\n        seen.add(key)\n        sel.append(int(ids[i]))\n        if len(sel) >= TARGET_DOCS:\n            break\n\n    json.dump(sel, open(OUT, \"w\"))\n    print(f\"wrote {len(sel)} ids -> {OUT}\", flush=True)\n    np.save(\"/tmp/scores.npy\", scores)\n    np.save(\"/tmp/order.npy\", order)", "newString": "    import torch\n    device = \"cuda\" if torch.cuda.is_available() else \"cpu\"\n\n    # Shared negatives: a random pool sample. The pool is overwhelmingly\n    # not-target-like, so treating it wholesale as the negative class costs only\n    # a little margin and no directional bias.\n    neg_idx = rng.choice(N, size=min(N_NEG, N), replace=False)\n    # Positives are ~350-token chunks; cap negatives to a comparable length so\n    # that document length is not itself a discriminative feature.\n    neg_rows = [featurize(pool_toks[i], cap=400) for i in neg_idx]\n\n    print(\"precomputing pool features ...\", flush=True)\n    pool_rows = [featurize(tk, cap=1500) for tk in pool_toks]\n\n    print(\"penalties ...\", flush=True)\n    pen = np.fromiter((quality_penalty(texts[i], pool_toks[i]) for i in range(N)),\n                      dtype=np.float32, count=N)\n\n    # One classifier per target register; each ranks the whole pool for\n    # \"looks like THIS register\".\n    dom_scores = {}\n    for dom in (\"wiki\", \"qa\", \"webnews\"):\n        pos_rows = [featurize(norm_tokens(t), cap=400) for t in groups[dom]]\n        bag = rows_to_bag(pos_rows + neg_rows, device)\n        y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])\n        clf = HashedLogReg(DIM, device)\n        loss, acc = clf.fit(bag, y)\n        s = np.zeros(N, dtype=np.float32)\n        B = 20000\n        for st in range(0, N, B):\n            s[st:st + B] = clf.decision_function(\n                rows_to_bag(pool_rows[st:st + B], device))\n        dom_scores[dom] = s - pen\n        print(f\"  {dom}: loss {loss:.4f} bal-acc {acc:.4f}\", flush=True)\n\n    # Token-count estimate for budgeting (GPT-2 BPE averages ~4 chars/token).\n    est_tok = np.fromiter((len(t) / 4.0 + 1 for t in texts), dtype=np.float32, count=N)\n\n    # Budget shares, matching the measured token composition of the disclosed\n    # target: encyclopedic 1/4, technical Q&A 1/4, news + general web prose 1/2.\n    SHARE = {\"wiki\": 0.25, \"qa\": 0.25, \"webnews\": 0.50}\n\n    orders = {d: np.argsort(-dom_scores[d]) for d in SHARE}\n    cursor = {d: 0 for d in SHARE}\n    taken_tok = {d: 0.0 for d in SHARE}\n    seen, sel, used = set(), [], set()\n    # Emit enough for several times the 12M budget so ordering, not length,\n    # decides what the trainer sees.\n    GOAL = 12_000_000 * 3.0\n\n    def draw(dom):\n        \"\"\"Pop the next unused, non-duplicate doc from this domain's ranking.\"\"\"\n        o = orders[dom]\n        while cursor[dom] < N:\n            i = int(o[cursor[dom]]); cursor[dom] += 1\n            if i in used:\n                continue\n            tk = pool_toks[i]\n            if len(tk) < 40:\n                continue\n            key = hashlib.md5(\" \".join(tk[:50]).encode()).hexdigest()\n            if key in seen:\n                continue\n            seen.add(key); used.add(i)\n            return i\n        return None\n\n    print(\"interleaving domains to budget shares ...\", flush=True)\n    total = 0.0\n    alive = set(SHARE)\n    while total < GOAL and alive:\n        # take from whichever domain is furthest behind its target share\n        dom = min(alive, key=lambda d: taken_tok[d] / SHARE[d])\n        i = draw(dom)\n        if i is None:\n            alive.discard(dom); continue\n        sel.append(int(ids[i]))\n        taken_tok[dom] += float(est_tok[i]); total += float(est_tok[i])\n\n    print(\"  est tokens per domain:\",\n          {d: int(v) for d, v in taken_tok.items()}, flush=True)\n    json.dump(sel, open(OUT, \"w\"))\n    print(f\"wrote {len(sel)} ids -> {OUT}\", flush=True)", "originalFile": null, "structuredPatch": [{"oldStart": 235, "oldLines": 55, "newStart": 235, "newLines": 89, "lines": ["         pool_toks = [norm_tokens(t) for t in texts]", "         pickle.dump(pool_toks, open(cache, \"wb\"), protocol=4)", " ", "-    # ---- training set for the classifier", "+    import torch", "+    device = \"cuda\" if torch.cuda.is_available() else \"cpu\"", "+", "+    # Shared negatives: a random pool sample. The pool is overwhelmingly", "+    # not-target-like, so treating it wholesale as the negative class costs only", "+    # a little margin and no directional bias.", "     neg_idx = rng.choice(N, size=min(N_NEG, N), replace=False)", "     # Positives are ~350-token chunks; cap negatives to a comparable length so", "-    # document length is not itself a discriminative feature.", "-    pos_rows = [featurize(norm_tokens(t), cap=400) for t in pos_txt]", "+    # that document length is not itself a discriminative feature.", "     neg_rows = [featurize(pool_toks[i], cap=400) for i in neg_idx]", " ", "-    import torch", "-    device = \"cuda\" if torch.cuda.is_available() else \"cpu\"", "-    bag = rows_to_bag(pos_rows + neg_rows, device)", "-    y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])", "+    print(\"precomputing pool features ...\", flush=True)", "+    pool_rows = [featurize(tk, cap=1500) for tk in pool_toks]", " ", "-    print(\"fitting classifier ...\", flush=True)", "-    clf = HashedLogReg(DIM, device)", "-    loss, acc = clf.fit(bag, y)", "-    print(f\"  loss {loss:.4f}  balanced train acc {acc:.4f}\", flush=True)", "+    print(\"penalties ...\", flush=True)", "+    pen = np.fromiter((quality_penalty(texts[i], pool_toks[i]) for i in range(N)),", "+                      dtype=np.float32, count=N)", " ", "-    print(\"scoring pool ...\", flush=True)", "-    scores = np.zeros(N, dtype=np.float32)", "-    B = 20000", "-    for s in range(0, N, B):", "-        rows = [featurize(pool_toks[i], cap=1500) for i in range(s, min(s + B, N))]", "-        scores[s:s + len(rows)] = clf.decision_function(rows_to_bag(rows, device))", "+    # One classifier per target register; each ranks the whole pool for", "+    # \"looks like THIS register\".", "+    dom_scores = {}", "+    for dom in (\"wiki\", \"qa\", \"webnews\"):", "+        pos_rows = [featurize(norm_tokens(t), cap=400) for t in groups[dom]]", "+        bag = rows_to_bag(pos_rows + neg_rows, device)", "+        y = np.concatenate([np.ones(len(pos_rows)), np.zeros(len(neg_rows))])", "+        clf = HashedLogReg(DIM, device)", "+        loss, acc = clf.fit(bag, y)", "+        s = np.zeros(N, dtype=np.float32)", "+        B = 20000", "+        for st in range(0, N, B):", "+            s[st:st + B] = clf.decision_function(", "+                rows_to_bag(pool_rows[st:st + B], device))", "+        dom_scores[dom] = s - pen", "+        print(f\"  {dom}: loss {loss:.4f} bal-acc {acc:.4f}\", flush=True)", " ", "-    print(\"applying quality penalties ...\", flush=True)", "-    for i in range(N):", "-        scores[i] -= quality_penalty(texts[i], pool_toks[i])", "+    # Token-count estimate for budgeting (GPT-2 BPE averages ~4 chars/token).", "+    est_tok = np.fromiter((len(t) / 4.0 + 1 for t in texts), dtype=np.float32, count=N)", " ", "-    order = np.argsort(-scores)", "+    # Budget shares, matching the measured token composition of the disclosed", "+    # target: encyclopedic 1/4, technical Q&A 1/4, news + general web prose 1/2.", "+    SHARE = {\"wiki\": 0.25, \"qa\": 0.25, \"webnews\": 0.50}", " ", "-    print(\"near-duplicate suppression ...\", flush=True)", "-    seen, sel = set(), []", "-    for i in order:", "-        tk = pool_toks[i]", "-        if len(tk) < 40:", "-            continue", "-        # shingle fingerprint of the first prose window", "-        key = hashlib.md5(\" \".join(tk[:50]).encode()).hexdigest()", "-        if key in seen:", "-            continue", "-        seen.add(key)", "+    orders = {d: np.argsort(-dom_scores[d]) for d in SHARE}", "+    cursor = {d: 0 for d in SHARE}", "+    taken_tok = {d: 0.0 for d in SHARE}", "+    seen, sel, used = set(), [], set()", "+    # Emit enough for several times the 12M budget so ordering, not length,", "+    # decides what the trainer sees.", "+    GOAL = 12_000_000 * 3.0", "+", "+    def draw(dom):", "+        \"\"\"Pop the next unused, non-duplicate doc from this domain's ranking.\"\"\"", "+        o = orders[dom]", "+        while cursor[dom] < N:", "+            i = int(o[cursor[dom]]); cursor[dom] += 1", "+            if i in used:", "+                continue", "+            tk = pool_toks[i]", "+            if len(tk) < 40:", "+                continue", "+            key = hashlib.md5(\" \".join(tk[:50]).encode()).hexdigest()", "+            if key in seen:", "+                continue", "+            seen.add(key); used.add(i)", "+            return i", "+        return None", "+", "+    print(\"interleaving domains to budget shares ...\", flush=True)", "+    total = 0.0", "+    alive = set(SHARE)", "+    while total < GOAL and alive:", "+        # take from whichever domain is furthest behind its target share", "+        dom = min(alive, key=lambda d: taken_tok[d] / SHARE[d])", "+        i = draw(dom)", "+        if i is None:", "+            alive.discard(dom); continue", "         sel.append(int(ids[i]))", "-        if len(sel) >= TARGET_DOCS:", "-            break", "+        taken_tok[dom] += float(est_tok[i]); total += float(est_tok[i])", " ", "+    print(\"  est tokens per domain:\",", "+          {d: int(v) for d, v in taken_tok.items()}, flush=True)", "     json.dump(sel, open(OUT, \"w\"))", "     print(f\"wrote {len(sel)} ids -> {OUT}\", flush=True)", "-    np.save(\"/tmp/scores.npy\", scores)", "-    np.save(\"/tmp/order.npy\", order)", " ", " if __name__ == \"__main__\":", "     main()"]}], "userModified": false, "replaceAll": false}
#21
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBash
args
{
  "command": "tail -3 /tmp/eval1.log; cat /workspace/.timer/remaining_secs"
}
Bash result
packed 12000000 tokens from 30000 ids -> /tmp/dev_train.npy
HELDOUT_PPL 333.875  loss 5.8108  train_s 53  /tmp/dev_train.npy
(dev PPL on multi_dev; official uses a hidden disjoint sample of the same HQ domain)
4749

[stdout]
packed 12000000 tokens from 30000 ids -> /tmp/dev_train.npy
HELDOUT_PPL 333.875  loss 5.8108  train_s 53  /tmp/dev_train.npy
(dev PPL on multi_dev; official uses a hidden disjoint sample of the same HQ domain)
4749
[metadata] {"noOutputExpected": false}
#22
narration

Dev PPL v1 = 333.9. Now running the domain-balanced version:

toolBashRun curate v2 domain-balanced
args
{
  "command": "python -c \"\nimport json,random\nrandom.seed(1); ids=list(range(182016)); random.shuffle(ids)\njson.dump(ids[:40000], open('/tmp/random_sel.json','w'))\n\" && time python submission/curate.py 2>&1 | grep -viE \"warning|futurew|detach\" | tail -20",
  "description": "Run curate v2 domain-balanced",
  "timeout": 1500000
}
Bash result
loading positives from dev target ...
  wiki: 1641 chunks
  webnews: 668 chunks
  qa: 336 chunks
loading pool ...
  182016 pool docs
normalizing pool ...
precomputing pool features ...
penalties ...
  return float(loss), float(acc)
  wiki: loss 0.1722 bal-acc 0.9924
  qa: loss 0.0632 bal-acc 0.9980
  webnews: loss 0.2719 bal-acc 0.9886
interleaving domains to budget shares ...
  est tokens per domain: {'wiki': 8990631, 'qa': 8990806, 'webnews': 18018974}
wrote 47609 ids -> /workspace/submission/selection.json

real	1m53.854s
user	1m46.800s
sys	0m3.230s

[stdout]
loading positives from dev target ...
  wiki: 1641 chunks
  webnews: 668 chunks
  qa: 336 chunks
loading pool ...
  182016 pool docs
normalizing pool ...
precomputing pool features ...
penalties ...
  return float(loss), float(acc)
  wiki: loss 0.1722 bal-acc 0.9924
  qa: loss 0.0632 bal-acc 0.9980
  webnews: loss 0.2719 bal-acc 0.9886
interleaving domains to budget shares ...
  est tokens per domain: {'wiki': 8990631, 'qa': 8990806, 'webnews': 18018974}
wrote 47609 ids -> /workspace/submission/selection.json

real	1m53.854s
user	1m46.800s
sys	0m3.230s
[metadata] {"noOutputExpected": false}
#23
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashEval v2
args
{
  "command": "cp submission/selection.json /tmp/sel_v2.json && bash dev_eval.sh 2>&1 | grep HELDOUT",
  "description": "Eval v2",
  "timeout": 1500000
}
Bash result
HELDOUT_PPL 317.281  loss 5.7598  train_s 54  /tmp/dev_train.npy

[stdout]
HELDOUT_PPL 317.281  loss 5.7598  train_s 54  /tmp/dev_train.npy
[metadata] {"noOutputExpected": false}
#24
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolBashRandom baseline + inspect v2 top
args
{
  "command": "nohup bash dev_eval.sh /tmp/random_sel.json > /tmp/eval_rand.log 2>&1 & \npython -c \"\nimport json\nsel=json.load(open('/tmp/sel_v2.json'))\nneed={sel[k]:k for k in [0,1,2,3,4,5,100,101,102]}\nfor line in open('data/pool.jsonl'):\n    r=json.loads(line)\n    if r['id'] in need: print('=== rank',need[r['id']], repr(r['text'][:250]))\n\"",
  "description": "Random baseline + inspect v2 top",
  "timeout": 1500000
}
Bash result
=== rank 101 'Vitals – 1696-1781Afro-Russian general, engineer, and nobleman, the first of such lineage to attain status in the Russian royal court. Kidnapped at the age of seven, he was taken to the court of the Ottoman Sultan in Constantinople and later ransomed'
=== rank 100 'Intended audience: script developers (PHP, JSP, etc.), webmasters, Web project managers, and anyone who wants to understand how to set or send HTTP charset information.\nWhen a server sends a document to a user agent (eg. a browser) it also sends info'
=== rank 102 'Prime Minister Narendra Modi’s visit to Fiji Islands would be an enormous boost for the Indian diasporic community and will underline increased warmth in Fiji’s ties with India. The scenic South Pacific island nation, which advertises itself as a tic'
=== rank 5 "LUCKNOW, India (Reuters) - Thousands of youngsters in India have burned down empty train coaches and blocked rail traffic this week in protest against what they call irregularities in recruitment by the mammoth railways department, one of the world's"
=== rank 3 ' Lancia Augusta was produced by Italian automanufacturer Lancia between 1933-1936. The car was powered by a 1196 cc Lancia V4 engine.\nDuring the 1920s, Lancia had been known as producers of sports cars and middle sized sedans: the smaller Augusta rep'
=== rank 4 'Major Bhupinder Singh\nIn sept. 1965, Major Bhupinder Singh commanded the "B" squadron of the 4 Horse against Pakistani forces. On the 11th Sept. he successfully led his forces in cutting of the enemy retreat along the Gadgor-Phillora road. In the bat'
=== rank 2 ' for her role as Brittany on the BET comedy-drama series The Game. She appeared in 16 episodes of the series between 2006 and 2009.\nShe earned her first professional acting credit on the show Girlfriends, which was the inspiration for the spin-off se'
=== rank 0 '.<|endoftext|>Amid calls for war by the state-run media, China accused India of lying to the public on the border row and again warned New Delhi to withdraw troops to “avoid worsening of the situation”….A special report by Gaurav Sharma for Asian Lit'
=== rank 1 ' AutoComplete : How to get the selected items id?_编程问答_动力学知识库\n动力学知识库\n主页\n编程\n软件\n设计\n生活\n游戏\n作文\n当前位置: 动力学知识库 > 问答 > 编程问答 >\njavascript - Jquery AutoComplete : How to get the selected items id?\n问题描述:\nI have an auto complete field which is working perfectly, '

[stdout]
=== rank 101 'Vitals – 1696-1781Afro-Russian general, engineer, and nobleman, the first of such lineage to attain status in the Russian royal court. Kidnapped at the age of seven, he was taken to the court of the Ottoman Sultan in Constantinople and later ransomed'
=== rank 100 'Intended audience: script developers (PHP, JSP, etc.), webmasters, Web project managers, and anyone who wants to understand how to set or send HTTP charset information.\nWhen a server sends a document to a user agent (eg. a browser) it also sends info'
=== rank 102 'Prime Minister Narendra Modi’s visit to Fiji Islands would be an enormous boost for the Indian diasporic community and will underline increased warmth in Fiji’s ties with India. The scenic South Pacific island nation, which advertises itself as a tic'
=== rank 5 "LUCKNOW, India (Reuters) - Thousands of youngsters in India have burned down empty train coaches and blocked rail traffic this week in protest against what they call irregularities in recruitment by the mammoth railways department, one of the world's"
=== rank 3 ' Lancia Augusta was produced by Italian automanufacturer Lancia between 1933-1936. The car was powered by a 1196 cc Lancia V4 engine.\nDuring the 1920s, Lancia had been known as producers of sports cars and middle sized sedans: the smaller Augusta rep'
=== rank 4 'Major Bhupinder Singh\nIn sept. 1965, Major Bhupinder Singh commanded the "B" squadron of the 4 Horse against Pakistani forces. On the 11th Sept. he successfully led his forces in cutting of the enemy retreat along the Gadgor-Phillora road. In the bat'
=== rank 2 ' for her role as Brittany on the BET comedy-drama series The Game. She appeared in 16 episodes of the series between 2006 and 2009.\nShe earned her first professional acting credit on the show Girlfriends, which was the inspiration for the spin-off se'
=== rank 0 '.<|endoftext|>Amid calls for war by the state-run media, China accused India of lying to the public on the border row and again warned New Delhi to withdraw troops to “avoid worsening of the situation”….A special report by Gaurav Sharma for Asian Lit'
=== rank 1 ' AutoComplete : How to get the selected items id?_编程问答_动力学知识库\n动力学知识库\n主页\n编程\n软件\n设计\n生活\n游戏\n作文\n当前位置: 动力学知识库 > 问答 > 编程问答 >\njavascript - Jquery AutoComplete : How to get the selected items id?\n问题描述:\nI have an auto complete field which is working perfectly, '
[metadata] {"noOutputExpected": false}
#25
narration

Chinese-boilerplate page ranked #1 — isalpha() passes CJK. Adding a non-ASCII/English penalty and a stricter length floor.

toolEdit
args
{
  "replace_all": false,
  "file_path": "/workspace/submission/curate.py",
  "old_string": "    p = 0.0\n    low = text[:4000].lower()",
  "new_string": "    p = 0.0\n    head = text[:4000]\n    low = head.lower()\n    # English-only target: penalize non-Latin / non-ASCII heavy pages hard.\n    # (Note: str.isalpha() is True for CJK, so the alpha-density check below\n    # does NOT catch these on its own.)\n    nonascii = sum(ord(c) > 127 for c in head) / len(head)\n    if nonascii > 0.02:\n        p += 30.0 * (nonascii - 0.02)\n    # ASCII-letter density: real English prose is dominated by a-zA-Z\n    asc = sum((\"a\" <= c <= \"z\") or (\"A\" <= c <= \"Z\") for c in head) / len(head)\n    if asc < 0.65:\n        p += 6.0 * (0.65 - asc)"
}
Edit result
The file /workspace/submission/curate.py has been updated successfully. (file state is current in your context — no need to Read it back)

[metadata] {"filePath": "/workspace/submission/curate.py", "oldString": "    p = 0.0\n    low = text[:4000].lower()", "newString": "    p = 0.0\n    head = text[:4000]\n    low = head.lower()\n    # English-only target: penalize non-Latin / non-ASCII heavy pages hard.\n    # (Note: str.isalpha() is True for CJK, so the alpha-density check below\n    # does NOT catch these on its own.)\n    nonascii = sum(ord(c) > 127 for c in head) / len(head)\n    if nonascii > 0.02:\n        p += 30.0 * (nonascii - 0.02)\n    # ASCII-letter density: real English prose is dominated by a-zA-Z\n    asc = sum((\"a\" <= c <= \"z\") or (\"A\" <= c <= \"Z\") for c in head) / len(head)\n    if asc < 0.65:\n        p += 6.0 * (0.65 - asc)", "originalFile": null, "structuredPatch": [{"oldStart": 142, "oldLines": 7, "newStart": 142, "newLines": 18, "lines": ["     if n == 0 or not toks:", "         return 99.0", "     p = 0.0", "-    low = text[:4000].lower()", "+    head = text[:4000]", "+    low = head.lower()", "+    # English-only target: penalize non-Latin / non-ASCII heavy pages hard.", "+    # (Note: str.isalpha() is True for CJK, so the alpha-density check below", "+    # does NOT catch these on its own.)", "+    nonascii = sum(ord(c) > 127 for c in head) / len(head)", "+    if nonascii > 0.02:", "+        p += 30.0 * (nonascii - 0.02)", "+    # ASCII-letter density: real English prose is dominated by a-zA-Z", "+    asc = sum((\"a\" <= c <= \"z\") or (\"A\" <= c <= \"Z\") for c in head) / len(head)", "+    if asc < 0.65:", "+        p += 6.0 * (0.65 - asc)", "     p += 0.25 * sum(s in low for s in BAD_SUB)", "     # word-character density: prose is high, nav/markup dumps are low", "     alpha = sum(c.isalpha() or c.isspace() for c in text[:4000]) / min(n, 4000)"]}], "userModified": false, "replaceAll": false}