FA-99483 / Vector retrieval ranking / Member archive
Vector retrieval: Vector coordinates are compared lexicographically · case 03
Vector coordinates are compared lexicographically.
Case contract
Rows [id,vector] rank by exact squared Euclidean distance to query, then ID.
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 |
|---|---|---|---|
| large first coordinate | ["b", "a"] | ["a", "b"] | Failed |
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