FA-97963 / Training label alignment / Member archive
A class-column reorder silently relabels target vectors · case 03
A class-column reorder silently relabels target vectors.
Case contract
Project each score row from source_classes order to target_classes order by class name; missing target classes receive 0.
Why this case matters
A small deterministic training-data operation makes label ownership and ordering explicit.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| swap named columns | [[3, 4]] | [[4, 3]] | Failed |
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