# CTSpinoPelvic1K Sample

This is a 10-case stratified sample of the parent CTSpinoPelvic1K dataset, intended for interface inspection and reproducibility checks. It is NOT large enough for any segmentation training or meaningful evaluation.

## Sampling provenance

- Pruned from: `anonymous-neurips-ED/CTSpinoPelvic1K-Sample` (in place)
- Random seed: `42`
- Strategy: stratified by `lstv_class` (≥1 case per non-empty class)
- Records kept: `10` of `1153`
- `lstv_class` distribution: `{3: 1, 0: 7, 2: 1, 1: 1}`
- `config` distribution: `{'pelvic_native': 5, 'spine_only': 2, 'fused': 3}`

## Splits caveat

`splits_5fold.json` is preserved for surviving tokens but folds may be sparse or empty. Do not run cross-validation on the sample; use the parent dataset for that.