FA-98949 / Optimizer update state / Member archive
Momentum ignores the prior velocity · case 04
Momentum ignores the prior velocity.
Case contract
Return [new_parameter,new_velocity] for v_next=mu*v+g and p_next=p-lr*v_next.
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 |
|---|---|---|---|
| carried velocity | [2, 2] | [-6, 4] | Failed |
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