FA-99409 / Embedding vector normalization / Member archive
Batch centering subtracts a row average · case 04
Batch centering subtracts a row average.
Case contract
For a rectangular matrix subtract each feature mean; preserve shape and return empty for no rows.
Why this case matters
A small embedding preparation contract can be checked without a model or retrieval system.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| independent feature offsets | [[-5.0, 5.0], [-6.0, 6.0]] | [[-1, -2], [1, 2]] | Failed |
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