FAILURE MAP
← Case archive

FA-98987 / Optimizer update state / Member archive

AMSGrad forgets the historical maximum variance · case 02

AMSGrad forgets the historical maximum variance.

Member previewVariant 2 · 3 implementations · 6 checks per implementation

Case contract

Return [max(old_max,vhat), lr*mhat/(sqrt(maximum)+eps)].

Why this case matters

Optimizer implementations must associate each parameter with its own mathematically specified update state.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixtureActualExpectedOutcome
retain historical[2.0, 1.414213562373095][9, 0.6666666666666666]Failed

MEMBER ARCHIVE

The complete case is available to members.

This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

Member access is invitation-based. Sign in with your invited account to inspect the sources.

Sign in to the archive ↗