FA-100498 / Sparse tensor canonicalization / Member archive
Sparse tensor: diagonal extraction includes off-diagonal values · case 03
diagonal extraction includes off-diagonal values.
Case contract
Return the sum of values at coordinates whose row equals column.
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 |
|---|---|---|---|
| mixed | 11 | 6 | Failed |
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