FA-100520 / Sparse tensor canonicalization / Member archive
Sparse tensor: dense materialization overwrites duplicate coordinates · case 05
dense materialization overwrites duplicate coordinates.
Case contract
Create a rows-by-cols integer matrix initialized to zero and add every COO contribution at its coordinate.
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 |
|---|---|---|---|
| duplicate cell | [[0, 2], [0, 0]] | [[0, 7], [0, 0]] | Failed |
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