FA-98850 / Gradient accumulation weighting / Member archive
Unequal valid-token batches receive equal token-mean weight · case 05
Unequal valid-token batches receive equal token-mean weight.
Case contract
Each sum contains only valid-token contributions. Divide the combined sum by all valid tokens; no valid tokens 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 token lengths | 3.0 | 3.5 | Failed |
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