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Balance YOLO label QA coverage
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2026-07-12 23:53:18 +02:00
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- Preserved Turnhout, Retie, Westerlo and Arendonk-heide as manifest-backed validation holdouts and made the tile exporter reject unknown samples or holdout leakage.
- Added `recommended_split` provenance to generated sample/reference/tile metadata and recorded the validation split in dataset summaries.
- Hardened persistent false-negative comparison so portfolios with different reference feature identities cannot be compared.
- Documented the expanded low-minimum-label dataset flow; no model was activated and no product API or migration changed.
- Generated and audited the 20-source expanded dataset on Tower: 171 retained tiles, 45,892 valid labels, 9 low-variance negatives removed and no structural audit warnings.
- Balanced visual label QA by source sample before selecting repeated dense tiles; the live pass covered all 19 retained sources without invalid labels, missing images or blank selections.
- No model was activated and no product API or migration changed.
## Sprint 170 Persistent false-negative evidence audit (2026-07-12)