FA-99538 / Vector retrieval ranking / Member archive
Vector retrieval: A query vector retrieves its own record · case 03
A query vector retrieves its own record.
Case contract
Rows [id,distance]; omit query_id then return nearest k IDs.
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 |
|---|---|---|---|
| self nearest | ["self"] | ["a"] | Failed |
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