FA-98125 / Sequence batch packing / Member archive
Loss mask includes prompt tokens · case 05
Loss mask includes prompt tokens.
Case contract
Concatenate prompt and response tokens; return a mask of zero for prompt positions and one for response positions.
Why this case matters
This deterministic toy packing rule models a common boundary in preparing bounded training sequences.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| one response | [[5, 10, 15], [1, 1, 1]] | [[5, 10, 15], [0, 0, 1]] | Failed |
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