FA-100564 / Mixture of experts dispatch / Member archive
Selected gate weights retain probability mass from discarded experts · case 04
Selected gate weights retain probability mass from discarded experts.
Case contract
Select top k (expert,weight) pairs by descending weight then name; normalize selected weights to sum one, with zero total producing an empty list.
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 |
|---|---|---|---|
| top two mass | [["a", 0.5], ["b", 0.4]] | [["a", 0.5555555555555556], ["b", 0.4444444444444444]] | Failed |
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