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apertus-c3-dedup-audit-dedup-20260519t010924z

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deduplication
duplicate-detection
minhash
apertus
glossapi
greek
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Apertus C3 Dedup Audit - dedup_20260519T010924Z

This gated public dataset repository contains machine-readable duplicate-overlap artifacts for the run dedup_20260519T010924Z.

Scope: HF source-pool overlap with Apertus pretraining sources, not the exact sampled C3 training mix. The held-out contamination check was skipped because no holdout doc-key list was provided.

Headline Counts

  • HF source-pool docs audited: 98,203,721
  • Matched HF source-pool docs: 2,223,781
  • Worker validation: True
  • Near-dup MinHash LSH: included
  • Greek diacritic policy: preserve

What Is Included

  • REPORT.md: human-readable summary.
  • artifacts/dedup_20260519T010924Z/per_hf_pool_doc_overlap.parquet: one row per matched HF-pool document with best match stage and source.
  • artifacts/dedup_20260519T010924Z/per_hf_pool_source_actionable.parquet: source-level fresh/seen summary and recommended action.
  • artifacts/dedup_20260519T010924Z/summary_matrix.parquet: per-pair exact and near match counts.
  • artifacts/dedup_20260519T010924Z/exact_overlap_summary.parquet: strict/relaxed exact pair counts.
  • artifacts/dedup_20260519T010924Z/near_overlap_summary.parquet: inexact/near MinHash pair counts.
  • artifacts/dedup_20260519T010924Z/overlap/strict_exact/*.parquet: exact duplicate pairs using strict normalized hashes.
  • artifacts/dedup_20260519T010924Z/overlap/relaxed_exact/*.parquet: exact duplicate pairs using relaxed normalized hashes.
  • artifacts/dedup_20260519T010924Z/overlap/near/*.parquet: inexact duplicate pairs with estimated_jaccard >= 0.85.
  • manifests/dedup_20260519T010924Z/validation.json: worker completion validation.
  • run_scripts/: scripts used for the rerun after operational fixes.

The large intermediate per-source hash tables under sources/ are intentionally not uploaded here; the duplicate pair and summary artifacts are the intended public payload.

Artifact Files

path size
artifacts/dedup_20260519T010924Z/concat_summary.json 0.00 MiB
artifacts/dedup_20260519T010924Z/exact_overlap_summary.parquet 0.00 MiB
artifacts/dedup_20260519T010924Z/near_overlap_summary.parquet 0.00 MiB
artifacts/dedup_20260519T010924Z/overlap/near/cleanwiki_el_x_glossapi_nanochat.parquet 10.83 MiB
artifacts/dedup_20260519T010924Z/overlap/near/cleanwiki_el_x_hplt_clean60.parquet 1.40 MiB
artifacts/dedup_20260519T010924Z/overlap/near/fw2hq_ell_grek_x_glossapi_nanochat.parquet 224.93 MiB
artifacts/dedup_20260519T010924Z/overlap/near/fw2hq_ell_grek_x_hplt_clean60.parquet 224.16 MiB
artifacts/dedup_20260519T010924Z/overlap/relaxed_exact/cleanwiki_el_x_glossapi_nanochat.parquet 0.02 MiB
artifacts/dedup_20260519T010924Z/overlap/relaxed_exact/cleanwiki_el_x_hplt_clean60.parquet 0.02 MiB
artifacts/dedup_20260519T010924Z/overlap/relaxed_exact/europarl_greek_x_glossapi_nanochat.parquet 0.55 MiB
artifacts/dedup_20260519T010924Z/overlap/relaxed_exact/fw2hq_ell_grek_x_glossapi_nanochat.parquet 188.32 MiB
artifacts/dedup_20260519T010924Z/overlap/relaxed_exact/fw2hq_ell_grek_x_hplt_clean60.parquet 188.32 MiB
artifacts/dedup_20260519T010924Z/overlap/strict_exact/cleanwiki_el_x_glossapi_nanochat.parquet 0.01 MiB
artifacts/dedup_20260519T010924Z/overlap/strict_exact/cleanwiki_el_x_hplt_clean60.parquet 0.01 MiB
artifacts/dedup_20260519T010924Z/overlap/strict_exact/fw2hq_ell_grek_x_glossapi_nanochat.parquet 157.03 MiB
artifacts/dedup_20260519T010924Z/overlap/strict_exact/fw2hq_ell_grek_x_hplt_clean60.parquet 157.06 MiB
artifacts/dedup_20260519T010924Z/per_hf_pool_doc_overlap.parquet 77.40 MiB
artifacts/dedup_20260519T010924Z/per_hf_pool_source_actionable.parquet 0.00 MiB
artifacts/dedup_20260519T010924Z/summary_matrix.parquet 0.00 MiB

Report

Dedup audit REPORT — dedup_20260519T010924Z

Scope

This audit measures HF source-pool overlap with Apertus pretraining, NOT the exact 1:1 sampled C3 training mix. Per PLAN §2 / review r4 reframing: the C3 mix was sampled from this HF source pool; the load-bearing CPT-replay recipe would need a separate c3_exact_mix_overlap audit run that reads the C3 mix manifest (currently held on the TERMINATED gcloud instance).

Greek diacritic policy: preserve (USER DECISION 2026-05-18). HF source-pool docs: 98,203,721 Matched HF source-pool docs: 2,223,781 Apertus sources audited: FW2-HQ ell_Grek, Clean-Wikipedia el, EuroParl Greek (20 bitexts), EuroBlocks Greek Long-context phase: excluded (FineWeb-Long + Institutional Books not measured). Held-out contamination check: SKIPPED — no manifests/run_<RUN_ID>/holdout_doc_ids.parquet was provided. This report does NOT verify C3 val/test integrity. Re-run step 08 with a holdout doc-id list to add eval-contamination coverage. Near-dup (MinHash LSH) overlap: included (per-pair counts below).

Per-HF-pool-source actionable (default sensitivity)

hf_pool_source total seen partial fresh fresh_share recommendation
Apothetirio_Kallipos 4,827 7 0 4,820 0.999 include_full
openbook_gr 3,719 55 0 3,664 0.985 include_full
Wikisource_Greek_texts 5,377 26 0 5,351 0.995 include_full
opengov.gr-diaboyleuseis 1,394 2 0 1,392 0.999 include_full
openarchives.gr 153,215 8 0 153,207 1.000 include_full
greek_phd 37,217 1 0 37,216 1.000 include_full
dimodis_logotexnia 11 0 0 11 1.000 include_full
klasikh_arx_ell_grammateia 815 0 0 815 1.000 include_full
HuggingFaceFW/finewiki 239,695 123,644 0 116,051 0.484 include_half_weight
Ekklisiastika_Keimena 675 0 0 675 1.000 include_full
OPUS/OpenSubtitles-el-v2018 143,441 5 0 143,436 1.000 include_full
Apothetirio_Pergamos 15,240 0 0 15,240 1.000 include_full
eurlex-greek-legislation 22,694 160 0 22,534 0.993 include_full
HPLT/ell_Grek_ge8_no_mt_clean60 48,728,774 2,099,756 0 46,629,018 0.957 include_full
ellinika_dedomena_europaikou_koinovouliou 28,723 80 0 28,643 0.997 include_full
Sxolika_vivlia 123 0 0 123 1.000 include_full
AI-team-UoA/greek_legal_code 47,563 27 0 47,536 0.999 include_full
1000_prwta_xronia_ellhnikhs 1,015 1 0 1,014 0.999 include_full
Ellinika_Keimena_Project_Gutenberg 214 9 0 205 0.958 include_full

Sensitivity grid

setting drop ≥ partial ≥ total drop total partial total fresh
strict 0.10 0.02 2,223,781 0 95,979,940
default 0.30 0.05 2,223,781 0 95,979,940
lenient 0.50 0.10 2,223,781 0 95,979,940

Per-pair summary matrix

stage pair match_rows
strict_exact cleanwiki_el_x_glossapi_nanochat 52
strict_exact cleanwiki_el_x_hplt_clean60 52
strict_exact fw2hq_ell_grek_x_glossapi_nanochat 1,129,773
strict_exact fw2hq_ell_grek_x_hplt_clean60 1,129,990
relaxed_exact cleanwiki_el_x_glossapi_nanochat 78
relaxed_exact cleanwiki_el_x_hplt_clean60 78
relaxed_exact europarl_greek_x_glossapi_nanochat 49,258
relaxed_exact fw2hq_ell_grek_x_glossapi_nanochat 1,355,075
relaxed_exact fw2hq_ell_grek_x_hplt_clean60 1,355,080
near cleanwiki_el_x_glossapi_nanochat 138,418
near cleanwiki_el_x_hplt_clean60 15,168
near fw2hq_ell_grek_x_glossapi_nanochat 2,096,077
near fw2hq_ell_grek_x_hplt_clean60 2,090,247

Methodology pins

  • text_dedup.py commit: 9a6b039; file-hash 6b9bfdb0bd9923349c348f80866c472101ab8fcf
  • greek_diacritic_policy: preserve
  • 128-perm MinHash, token 5-shingles, Jaccard ≥ 0.85, skip-short-doc < 20 tokens
  • Workers used canonical text_dedup.hash_bytes (full 64-char blake3 hex) and text_dedup.minhash_signature — no reimplementation

What this audit does NOT cover

  • Exact C3 sampled mix overlap (load-bearing for CPT replay recipe) — separate run needed
  • Long-context phase Greek (FineWeb-Long + Institutional Books) — separate run needed
  • Held-out C3 val/test contamination — separate run needed (this report had no holdout list)
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