FA-100588 / Mixture of experts dispatch / Member archive
Top-k selection crosses a group boundary · case 03
Top-k selection crosses a group boundary.
Case contract
Input (group,expert,score) rows; return up to k per group by score descending and expert ID, preserving group lexical order then rank.
Why this case matters
A deterministic toy router makes this dispatch decision independently inspectable.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| per group | [["g2", "b", 5]] | [["g1", "z", 4], ["g2", "b", 5]] | Failed |
MEMBER ARCHIVE
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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.
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