FA-100490 / Sparse tensor canonicalization / Member archive
Sparse tensor: COO matrix-vector product ignores row coordinates · case 05
COO matrix-vector product ignores row coordinates.
Case contract
Return rows-length integer product y where each [r,c,v] contributes v*vector[c] to y[r].
Why this case matters
A small offline sparse-array operation has explicit coordinate and storage semantics.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| separate rows | [37, 37, 37] | [25, 0, 12] | Failed |
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