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Adam bias correction reuses the previous update exponent · case 02

Adam bias correction reuses the previous update exponent.

Member previewVariant 2 · 3 implementations · 6 checks per implementation

Case contract

For positive integer t and beta values in [0,1), return [m/(1-b1**t),v/(1-b2**t)].

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
second step[2.0, 6.0][1.3333333333333333, 4]Failed

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