FA-99468 / Vector retrieval ranking / Member archive
Vector retrieval: A later retrieval channel overwrites earlier candidates · case 03
A later retrieval channel overwrites earlier candidates.
Case contract
Return unique IDs from both channel lists, ordered by descending score then ID; repeated IDs keep their greatest score.
Why this case matters
An offline vector retrieval toy model isolates one ranking contract from embedding generation, storage, and serving.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| both channels | ["b"] | ["b", "a"] | Failed |
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