FA-99500 / Vector retrieval ranking / Member archive
Vector retrieval: The item at rank k is dropped · case 05
The item at rank k is dropped.
Case contract
Rows [id,score] return the first k IDs after descending score and ID ordering.
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 |
|---|---|---|---|
| top one | [] | ["a"] | Failed |
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