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Cosine decay starts partway through its phase after warmup · case 04
Cosine decay starts partway through its phase after warmup.
Case contract
Linearly warm up through warmup; then cosine-decay to zero at total.
Why this case matters
A deterministic scalar schedule makes step-to-rate mapping explicit for a small training loop.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| warmup end | 6.0 | 12 | Failed |
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