| # Dataset Changelog Index |
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| All changes to the `Nacryos/ancient-scripts-datasets` HuggingFace dataset are logged here in reverse chronological order. Each entry is a self-contained document explaining **what** changed, **why**, **how** (scripts, sources, methodology), and **how it was validated**. |
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| ## Changelog Entries |
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| | Date | Entry | Summary | |
| |------|-------|---------| |
| | 2026-03-19 | [008_linear_b_dataset.md](008_linear_b_dataset.md) | Linear B (Mycenaean Greek) dataset: 211 signs, 74 IPA mappings, 2,478 words from Unicode/Shannon/Wiktionary/IE-CoR | |
| | 2026-03-19 | [007_phono_quality_flagging.md](007_phono_quality_flagging.md) | Added `Phono_Quality` column (strong/moderate/weak/none/unscored), downgraded 27K Robbeets cross-family to "contested", fixed 2.9K Sino-Tibetan doubt markers | |
| | 2026-03-19 | [006_tier1_cldf_ingestion.md](006_tier1_cldf_ingestion.md) | +573K expert cognate pairs from IE-CoR, Robbeets, Savelyev — 31 new ancient languages, 4-agent adversarial audit | |
| | 2026-03-15 | [005_parquet_conversion.md](005_parquet_conversion.md) | Added Parquet files + YAML dataset card for HF `datasets` library integration | |
| | 2026-03-14 | [004_phylo_enrichment.md](004_phylo_enrichment.md) | Added phylogenetic metadata (`phylo_pairs.tsv`) derived from Glottolog CLDF | |
| | 2026-03-13 | [003_cognate_pairs_v2.md](003_cognate_pairs_v2.md) | Rebuilt all cognate pairs from scratch (v2), fixing 6 critical pipeline bugs | |
| | 2026-03-12 | [002_database_rectification.md](002_database_rectification.md) | IPA pipeline fixes, ancient language expansion, adversarial audits | |
| | 2026-03-08 | [001_initial_dataset.md](001_initial_dataset.md) | Initial dataset creation: 1,178 languages, lexicons, cognate pairs v1, validation sets | |
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| ## Log Standard |
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| Every changelog entry MUST include: |
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| 1. **Objective** — Why was the data changed? |
| 2. **Scripts** — What scripts were written/run? What does each do? |
| 3. **Sources** — What external data sources were used? |
| 4. **Source Reputability** — Academic credentials, peer-review status, citation counts, cross-referencing |
| 5. **Methodology** — Algorithms, formulas, thresholds, and academic references |
| 6. **Tests Performed** — Automated tests, known-answer checks, random sampling |
| 7. **Cross-Referencing** — How were random samples verified against original sources? |
| 8. **Output Summary** — Row counts, file sizes, schema changes |
| 9. **Commits** — Git commit hashes for traceability |
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