FA-98854 / Gradient accumulation weighting / Member archive
Sample weights are normalized by raw item count · case 04
Sample weights are normalized by raw item count.
Case contract
Weighted sums already include per-example weights. Divide by total weight mass; zero mass yields zero.
Why this case matters
A deterministic toy model isolates one local accumulation contract.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| unequal weight mass | 28.0 | 3.5 | Failed |
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