FAILURE MAP
← Case archive

FA-98148 / Attention mask construction / Member archive

Padded keys remain visible to active queries · case 03

Padded keys remain visible to active queries.

Member previewVariant 3 · 3 implementations · 6 checks per implementation

Case contract

Return rows for every query; a key is visible iff valid and key_index<=query_index.

Why this case matters

A small explicit visibility matrix makes sequence-attention boundary behavior reviewable.

One recorded failure

Sample boundary fixture

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

Boundary fixtureActualExpectedOutcome
padded final key[[true, false, false, false], [true, true, false, false], [true, true, true, false], [true, true, true, true]][[true, false, false, false], [true, true, false, false], [true, true, true, false], [true, true, true, false]]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 ↗