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fix gear 4: replace noisy labels with 300 augmented from clean reference crop
- Removed all noisy sebring/racing-original label=4 (full of 1s and 3s)
- Generated 250 train + 50 val augmented 4s from verified reference crop
- Augmentations: affine skew, random crop, brightness/contrast, noise, blur
- Saved clean reference as examples/sebring-tobi-lap6/gear_4.png
- 5,505 train / 948 val -
v3: deep clean via per-source cross-val + manual curation
- Per-source iterative cross-val cleaning (3 rounds each)
- racing-original: 99.6% OOF, removed all mislabeled 4s (were actually 1s)
- sebring: 82% OOF, removed 91 noisy transition frames
- mnist: 99% OOF, removed 30 ambiguous digits
- Fixed Paul Ricard gear_4 label CSV (was pointing to a 3)
- Fixed gear_4 example image
- Per-label verification composites in composites/{train,validation}/
- 5,391 train / 903 val -
add per-label verification composites and cleaning scripts
- composites/train/label_N.png — racing-only training samples per digit
- composites/validation/label_N.png — racing-only val samples per digit
- scripts/make_composites.py — regenerate composites from parquet
- scripts/iterative_clean.py — multi-round cross-val + ensemble cleaning
