eliminate zeros after summing duplicates #5861
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sum_duplicates can create zero entries in the csr matrix, which can give unexpected results in callers (see scikit-learn#3637).
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can you please add a regression test? |
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@justinvf, I'm labelling this as needing a contributor to take it over. Let us know if you instead intend to complete it. |
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Sure |
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sum_duplicates can create zero entries in the csr matrix, which can give unexpected results in callers (see #3637).