FA-99974 / Evaluation metric aggregation / Member archive

Macro specificity is pooled across classes · case 04

Macro specificity is pooled across classes.

Member previewVariant 4 · 3 implementations · 6 checks per implementation

Case contract

For each supplied label compute TN/(TN+FP) in a one-vs-rest view; average equally. A label with no actual negatives contributes 0; an empty label list returns 0.

Why this case matters

A small explicit evaluation contract makes aggregation behavior reproducible across labeled examples.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
class average	`0`	`0.6666666666666666`	Failed

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