FA-100484 / Sparse tensor canonicalization / Member archive
Sparse tensor: column reduction confuses row positions with column indices · case 04
column reduction confuses row positions with column indices.
Case contract
Return a dense list of width column sums, adding each value at its stored 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 |
|---|---|---|---|
| reordered columns | [4, 3, 4] | [3, 0, 8] | Failed |
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