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nano-gpt-data-curation

gpt-5.6-sol

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

backend
modal
variant
codex azure_ai/gpt-5.6-sol
metric
held-out multi-domain perplexity
actions
223
duration
59m
recorded
2026-08-04

run iddclm-nano-curation__KzgeyF6

Everything gpt-5.6-sol did on this task, in order.

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codexgpt-5.6-sol234 turns11 narration223 reasoning223 action223 observation1 final
#126
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolwait
args
{
  "cell_id": "80",
  "yield_time_ms": 30000,
  "max_tokens": 3000
}
wait result
Script completed
Wall time 13.8 seconds
Output:
HELDOUT_PPL 379.278  loss 5.9383  train_s 56  /tmp/balanced_vhigh.npy
SESSION_ID=45506
#127
narration

The domain-balanced rank is now at 379.3 perplexity, versus 604.7 for cleanliness alone. Increasing within-domain target-similarity has improved every balanced run so far, so I’m probing two stronger weights before locking the curator; this is now a focused one-parameter search rather than a redesign.

#128
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const patch = \"*** Begin Patch\\n*** Update File: /workspace/experiments/more_candidates.py\\n@@\\n balanced('balanced_smallchunks',.55,64000)\\n+balanced('balanced_2',2.0)\\n+balanced('balanced_3',3.0)\\n*** End Patch\";\ntext(await tools.apply_patch(patch));\n"
}
exec result
Script completed
Wall time 0.0 seconds
Output:
{}
#129
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const r = await tools.exec_command({cmd:\"python experiments/more_candidates.py\\nfor n in balanced_2 balanced_3; do python pack_selection.py experiments/$n.json /tmp/$n.npy; done\",workdir:\"/workspace\",yield_time_ms:1000,max_output_tokens:3000});\ntext(r.output); if(r.session_id) text(`SESSION_ID=${r.session_id}`);\n"
}
exec result
Script completed
Wall time 1.2 seconds
Output:
SESSION_ID=59797
#130
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const r = await tools.write_stdin({session_id:45506,chars:\"\",yield_time_ms:30000,max_output_tokens:3000});\ntext(r.output); if(r.session_id) text(`SESSION_ID=${r.session_id}`);\n"
}
exec result
Script running with cell ID 83
Wall time 11.0 seconds
Output:
#131
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolwait
args
{
  "cell_id": "83",
  "yield_time_ms": 30000,
  "max_tokens": 3000
}
wait result
Script completed
Wall time 4.9 seconds
Output:
HELDOUT_PPL 398.588  loss 5.9879  train_s 56  /tmp/balanced_smallchunks.npy
#132
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const r = await tools.write_stdin({session_id:59797,chars:\"\",yield_time_ms:30000,max_output_tokens:3000});\ntext(r.output); if(r.session_id) text(`SESSION_ID=${r.session_id}`);\n"
}
exec result
Script running with cell ID 84
Wall time 11.0 seconds
Output:
#133
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolwait
args
{
  "cell_id": "84",
  "yield_time_ms": 30000,
  "max_tokens": 3000
}
wait result
Script completed
Wall time 13.7 seconds
Output:
Token indices sequence length is longer than the specified maximum sequence length for this model (5414 > 1024). Running this sequence through the model will result in indexing errors
packed 12000000 tokens from 50219 ids -> /tmp/balanced_2.npy
Token indices sequence length is longer than the specified maximum sequence length for this model (5414 > 1024). Running this sequence through the model will result in indexing errors
SESSION_ID=59797
#134
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const r = await tools.write_stdin({session_id:59797,chars:\"\",yield_time_ms:30000,max_output_tokens:3000});\ntext(r.output); if(r.session_id) text(`SESSION_ID=${r.session_id}`);\n"
}
exec result
Script running with cell ID 85
Wall time 11.0 seconds
Output:
#135
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolwait
args
{
  "cell_id": "85",
  "yield_time_ms": 30000,
  "max_tokens": 3000
}
wait result
Script completed
Wall time 6.6 seconds
Output:
packed 12000000 tokens from 50209 ids -> /tmp/balanced_3.npy
#136
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const r = await tools.exec_command({cmd:\"for n in balanced_2 balanced_3; do python train_nano.py --train_npy /tmp/$n.npy --heldout_npy data/multi_dev.npy --out_json experiments/$n.result.json; done\",workdir:\"/workspace\",yield_time_ms:1000,max_output_tokens:3000});\ntext(r.output); if(r.session_id) text(`SESSION_ID=${r.session_id}`);\n"
}
exec result
Script completed
Wall time 1.2 seconds
Output:
SESSION_ID=8356
#137
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const patch = \"*** Begin Patch\\n*** Add File: /workspace/submission/curate.py\\n+#!/usr/bin/env python3\\n+\\\"\\\"\\\"Curate target-like, clean, domain-balanced pretraining documents.\\n+\\n+Criterion\\n+---------\\n+1. Learn target-vs-pool word unigram/bigram log-odds from the disclosed dev\\n+   distribution and a deterministic 1/61 sample of the pool.\\n+2. Learn four target-domain multinomial models from the four equal dev quarters.\\n+3. Reject short/non-English/boilerplate-heavy pages and add an independent prose\\n+   quality score (stopwords, alphabetic text, sentence punctuation, line reuse).\\n+4. Rank within the most likely domain by quality + target log-odds, and interleave\\n+   domains in equal 256k-token-proxy rounds. The official packer still performs\\n+   exact GPT-2 tokenization and truncation.\\n+\\n+The pool has a measurable extraction-source changepoint (one-item-per-line menus\\n+and policy boilerplate); it is detected from 2,000-document block statistics,\\n+not encoded as a hand-picked ID boundary.\\n+\\\"\\\"\\\"\\n+import json, math, os, re\\n+from collections import Counter\\n+\\n+import numpy as np\\n+from transformers import GPT2TokenizerFast\\n+\\n+ROOT = \\\"/workspace\\\"\\n+POOL = ROOT + \\\"/data/pool.jsonl\\\"\\n+DEV = ROOT + \\\"/data/multi_dev.npy\\\"\\n+OUT = ROOT + \\\"/submission/selection.json\\\"\\n+os.makedirs(os.path.dirname(OUT), exist_ok=True)\\n+\\n+tokenizer = GPT2TokenizerFast.from_pretrained(\\\"gpt2\\\", local_files_only=True)\\n+dev = np.load(DEV)\\n+positive, labels = [], []\\n+for domain in range(4):\\n+    quarter = dev[domain * 250_000:(domain + 1) * 250_000]\\n+    for start in range(0, len(quarter) - 512, 512):\\n+        positive.append(tokenizer.decode(quarter[start:start + 512]))\\n+        labels.append(domain)\\n+\\n+word_re = re.compile(r\\\"[a-z][a-z'-]+\\\")\\n+def features(text):\\n+    words = word_re.findall(text.lower())\\n+    return words + [\\\"_\\\" + a + \\\" \\\" + b for a, b in zip(words, words[1:])]\\n+\\n+# Target counts, domain counts, deterministic background sample, and automatic\\n+# source-stratum diagnostics in a single pool pass.\\n+target_count = Counter()\\n+domain_count = [Counter() for _ in range(4)]\\n+for text, domain in zip(positive, labels):\\n+    ff = features(text)\\n+    target_count.update(ff)\\n+    domain_count[domain].update(ff)\\n+vocabulary = set(target_count)\\n+background_count = Counter()\\n+block_stats = []\\n+chars = newlines = navdocs = number = 0\\n+with open(POOL) as stream:\\n+    for line in stream:\\n+        row = json.loads(line); text = row[\\\"text\\\"]\\n+        if row[\\\"id\\\"] % 61 == 17:\\n+            background_count.update(x for x in features(text[:8000]) if x in vocabulary)\\n+        chars += len(text); newlines += text.count(\\\"\\\\n\\\"); number += 1\\n+        low = text.lower()\\n+        navdocs += int(\\\"privacy policy\\\" in low or \\\"toggle navigation\\\" in low or \\\"skip to content\\\" in low)\\n+        if number == 2000:\\n+            block_stats.append((newlines / max(1, chars), navdocs / number))\\n+            chars = newlines = navdocs = number = 0\\n+\\n+# The first sustained block with both menu-like line density and policy/navigation\\n+# boilerplate marks the low-quality page-extraction stratum.\\n+cut_block = len(block_stats)\\n+for b in range(len(block_stats) - 1):\\n+    if (block_stats[b][0] > .015 and block_stats[b][1] > .10 and\\n+            block_stats[b + 1][0] > .015 and block_stats[b + 1][1] > .10):\\n+        cut_block = b\\n+        break\\n+cutoff = cut_block * 2000\\n+\\n+T, B, V = sum(target_count.values()), sum(background_count.values()), len(vocabulary)\\n+log_odds = {\\n+    x: math.log((n + .5) / (T + .5 * V))\\n+       - math.log((background_count[x] + .5) / (B + .5 * V))\\n+    for x, n in target_count.items()\\n+}\\n+domain_total = [sum(c.values()) for c in domain_count]\\n+domain_logp = [\\n+    {x: math.log((counts[x] + .2) / (domain_total[d] + .2 * V)) for x in vocabulary}\\n+    for d, counts in enumerate(domain_count)\\n+]\\n+\\n+stopwords = set(\\\"the of and to in a is that for it as was with be by on are from this an or at which but not have has were their its can will one all also more into than when other about who what how use using used you your we they our\\\".split())\\n+bad_phrases = (\\\"privacy policy\\\", \\\"cookie policy\\\", \\\"all rights reserved\\\", \\\"skip to content\\\",\\n+               \\\"toggle navigation\\\", \\\"sign in\\\", \\\"log in\\\", \\\"shopping cart\\\",\\n+               \\\"javascript is disabled\\\", \\\"terms and conditions\\\",\\n+               \\\"subscribe to our newsletter\\\", \\\"click here\\\", \\\"home >\\\")\\n+\\n+records = []\\n+with open(POOL) as stream:\\n+    for line in stream:\\n+        row = json.loads(line); ident = row[\\\"id\\\"]\\n+        if ident >= cutoff:\\n+            break\\n+        text = row[\\\"text\\\"]; nchar = max(1, len(text)); low = text.lower()\\n+        ff = features(text[:16000])\\n+        hits = [log_odds[x] for x in ff if x in log_odds]\\n+        similarity = sum(hits) / max(1, len(hits))\\n+        dscore = [sum(lp.get(x, -16.0) for x in ff) / max(1, len(ff))\\n+                  for lp in domain_logp]\\n+\\n+        words = re.findall(r\\\"[A-Za-z][A-Za-z'-]*\\\", text)\\n+        nw = max(1, len(words))\\n+        lines = [x.strip() for x in text.splitlines() if x.strip()]\\n+        alpha = sum(c.isalpha() for c in text) / nchar\\n+        stopfrac = sum(x.lower() in stopwords for x in words) / nw\\n+        unique_lines = len(set(lines)) / max(1, len(lines))\\n+        shortlines = sum(len(x) < 35 for x in lines) / max(1, len(lines))\\n+        sentence_rate = sum(low.count(x) for x in (\\\". \\\", \\\"? \\\", \\\"! \\\")) / nw\\n+        nav = sum(low.count(x) for x in bad_phrases)\\n+        weird = sum((not c.isprintable()) and c not in \\\"\\\\n\\\\t\\\\r\\\" for c in text) / nchar\\n+        quality = (2.2 * min(stopfrac / .42, 1.0)\\n+                   + 1.1 * min(alpha / .78, 1.0)\\n+                   + .8 * min(sentence_rate / .055, 1.0)\\n+                   + .45 * unique_lines - .22 * nav\\n+                   - 1.4 * max(0.0, shortlines - .48)\\n+                   - 2.5 * max(0.0, (text.count(\\\"\\\\n\\\") / nchar - .018) * 30)\\n+                   - 8.0 * weird\\n+                   - .8 * (\\\"lorem ipsum\\\" in low)\\n+                   - .8 * (\\\"<script\\\" in low or \\\"function(\\\" in low)\\n+                   + min(math.log1p(nw) / 8, .8))\\n+        if nchar < 700 or nw < 120:\\n+            quality -= 2.0\\n+        if nchar > 50000:\\n+            quality -= min(2.0, math.log(nchar / 50000))\\n+        token_proxy = max(1, round(nchar / 3.8))\\n+        eligible = token_proxy >= 180 and alpha >= .62 and stopfrac >= .20 and nav <= 5\\n+        if eligible:\\n+            records.append((ident, token_proxy, quality + 3.0 * similarity, dscore))\\n+\\n+# Rank within target domains, then interleave by token volume rather than document\\n+# count. A generous overflow tail lets the frozen packer reach exactly 12M tokens.\\n+queues = []\\n+for domain in range(4):\\n+    q = [r for r in records if int(np.argmax(r[3])) == domain]\\n+    q.sort(key=lambda r: (-r[2], r[0]))\\n+    queues.append(q)\\n+positions = [0, 0, 0, 0]\\n+selection = []\\n+while len(selection) < 50000 and any(positions[d] < len(queues[d]) for d in range(4)):\\n+    for domain in range(4):\\n+        volume = 0\\n+        while volume < 256000 and positions[domain] < len(queues[domain]):\\n+            row = queues[domain][positions[domain]]\\n+            positions[domain] += 1\\n+            selection.append(row[0])\\n+            volume += row[1]\\n+\\n+with open(OUT, \\\"w\\\") as f:\\n+    json.dump(selection, f)\\n+print(f\\\"wrote {len(selection)} unique ids; detected extraction cutoff at id {cutoff}\\\")\\n*** End Patch\";\ntext(await tools.apply_patch(patch));\n"
}
exec result
Script completed
Wall time 0.0 seconds
Output:
{}
#138
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const r = await tools.write_stdin({session_id:8356,chars:\"\",yield_time_ms:30000,max_output_tokens:3000});\ntext(r.output); if(r.session_id) text(`SESSION_ID=${r.session_id}`);\n"
}
exec result
Script running with cell ID 88
Wall time 11.0 seconds
Output:
#139
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolwait
args
{
  "cell_id": "88",
  "yield_time_ms": 30000,
  "max_tokens": 3000
}
wait result
Script completed
Wall time 15.2 seconds
Output:
HELDOUT_PPL 378.358  loss 5.9358  train_s 56  /tmp/balanced_2.npy
SESSION_ID=8356
#140
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const r = await tools.write_stdin({session_id:8356,chars:\"\",yield_time_ms:30000,max_output_tokens:3000});\ntext(r.output); if(r.session_id) text(`SESSION_ID=${r.session_id}`);\n"
}
exec result
Script running with cell ID 89
Wall time 11.0 seconds
Output:
#141
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolwait
args
{
  "cell_id": "89",
  "yield_time_ms": 30000,
  "max_tokens": 3000
}
wait result
Script completed
Wall time 9.3 seconds
Output:
SESSION_ID=8356
#142
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const r = await tools.write_stdin({session_id:8356,chars:\"\",yield_time_ms:30000,max_output_tokens:3000});\ntext(r.output); if(r.session_id) text(`SESSION_ID=${r.session_id}`);\n"
}
exec result
Script completed
Wall time 0.0 seconds
Output:
HELDOUT_PPL 375.084  loss 5.9272  train_s 56  /tmp/balanced_3.npy
#143
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const patch = \"*** Begin Patch\\n*** Update File: /workspace/experiments/more_candidates.py\\n@@\\n balanced('balanced_3',3.0)\\n+balanced('balanced_5',5.0)\\n+balanced('balanced_8',8.0)\\n*** End Patch\";\ntext(await tools.apply_patch(patch));\n"
}
exec result
Script completed
Wall time 0.0 seconds
Output:
{}
#144
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const r = await tools.exec_command({cmd:\"python experiments/more_candidates.py\\nfor n in balanced_5 balanced_8; do python pack_selection.py experiments/$n.json /tmp/$n.npy; done\\nfor n in balanced_5 balanced_8; do python train_nano.py --train_npy /tmp/$n.npy --heldout_npy data/multi_dev.npy --out_json experiments/$n.result.json; done\",workdir:\"/workspace\",yield_time_ms:1000,max_output_tokens:3000});\ntext(r.output); if(r.session_id) text(`SESSION_ID=${r.session_id}`);\n"
}
exec result
Script completed
Wall time 1.2 seconds
Output:
SESSION_ID=23591
#145
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const patch = \"*** Begin Patch\\n*** Add File: /workspace/claim.md\\n+# Hypothesis\\n+\\n+For a 12M-token budget, a small model will benefit more from clean documents whose word and phrase distribution resembles the disclosed high-quality target than from merely clean generic web prose. Selection must also be balanced across the four target registers; otherwise abundant general prose and news crowd out encyclopedic and technical language.\\n+\\n+# Mechanism\\n+\\n+The curator estimates smoothed unigram/bigram log-odds of the target against a deterministic background sample, assigns each eligible document to the closest of four quarter-specific target language models, and interleaves the four queues by token volume. Independent prose filters suppress short pages, menus, policy boilerplate, malformed text, and repetition.\\n+\\n+An observable prediction independent of final perplexity is that the first 12M selected tokens will have substantially higher mean target-vs-background log-odds and lower navigation/policy-marker incidence than a random sample, while no plentiful target domain exceeds roughly one quarter of the priority rounds. The technical queue may exhaust early; that shortage itself is observable from the produced queue sizes.\\n+\\n+# Falsification\\n+\\n+The hypothesis is falsified if either (a) target log-odds does not distinguish held-out target chunks from random pool chunks, (b) the selected prefix does not improve those stated corpus statistics, or (c) an equal-budget cleanliness-only ranking consistently matches or beats the balanced ranking on disjoint development samples. A large reversal on the hidden sample would additionally indicate dev-source overfitting in the phrase model.\\n+\\n+# Transfer\\n+\\n+The method transfers to another disclosed mixture by replacing the target sample and its domain partition: the background contrast, source-changepoint detection, prose filters, and token-volume interleaving are corpus-agnostic. If domain labels are unavailable, clustering target chunks before fitting the per-domain models provides the analogous balancing mechanism.\\n*** End Patch\";\ntext(await tools.apply_patch(patch));\n"
}
exec result
Script completed
Wall time 0.0 seconds
Output:
{}
#146
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const r = await tools.write_stdin({session_id:23591,chars:\"\",yield_time_ms:30000,max_output_tokens:3000});\ntext(r.output); if(r.session_id) text(`SESSION_ID=${r.session_id}`);\n"
}
exec result
Script running with cell ID 94
Wall time 11.0 seconds
Output:
#147
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolwait
args
{
  "cell_id": "94",
  "yield_time_ms": 30000,
  "max_tokens": 3000
}
wait result
Script completed
Wall time 11.0 seconds
Output:
Token indices sequence length is longer than the specified maximum sequence length for this model (5414 > 1024). Running this sequence through the model will result in indexing errors
packed 12000000 tokens from 50137 ids -> /tmp/balanced_5.npy
SESSION_ID=23591
#148
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const r = await tools.write_stdin({session_id:23591,chars:\"\",yield_time_ms:30000,max_output_tokens:3000});\ntext(r.output); if(r.session_id) text(`SESSION_ID=${r.session_id}`);\n"
}
exec result
Script running with cell ID 95
Wall time 11.0 seconds
Output:
#149
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolwait
args
{
  "cell_id": "95",
  "yield_time_ms": 30000,
  "max_tokens": 3000
}
wait result
Script completed
Wall time 1.2 seconds
Output:
Token indices sequence length is longer than the specified maximum sequence length for this model (5414 > 1024). Running this sequence through the model will result in indexing errors
SESSION_ID=23591
#150
reasoning (redacted)

encrypted chain-of-thought — recorded, not exposed

toolexec
args
{
  "input": "const r = await tools.write_stdin({session_id:23591,chars:\"\",yield_time_ms:30000,max_output_tokens:3000});\ntext(r.output); if(r.session_id) text(`SESSION_ID=${r.session_id}`);\n"
}
exec result
Script running with cell ID 96
Wall time 11.0 seconds
Output: