FA-99004 / Optimizer update state / Member archive
Coupled decay is omitted from the gradient moments · case 04
Coupled decay is omitted from the gradient moments.
Case contract
This unit-coefficient toy step forms q=g+wd*p, then returns [p-lr*q,q,q*q]; it does not perform adaptive normalization.
Why this case matters
Optimizer implementations must associate each parameter with its own mathematically specified update state.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| decay-only | [2, 0, 0] | [1, 1, 1] | Failed |
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