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Posted to dev@mahout.apache.org by "Andrew Palumbo (JIRA)" <ji...@apache.org> on 2017/03/30 03:12:41 UTC

[jira] [Created] (MAHOUT-1963) Signs are Flipped in the ViennaCL Sparse %*% Sparse tests

Andrew Palumbo created MAHOUT-1963:
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             Summary: Signs are Flipped in the ViennaCL Sparse %*% Sparse tests
                 Key: MAHOUT-1963
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1963
             Project: Mahout
          Issue Type: Bug
    Affects Versions: 0.13.0
            Reporter: Andrew Palumbo
            Assignee: Andrew Palumbo
            Priority: Critical
             Fix For: 0.13.0, 0.13.1


Here aand in other places, In the ViennaCL (both modules) Unit tests, the signs are flipped when adding random data to matrices.

{code}
    // add some sparse data with a 20% threshold
    mxA := { (_, _, v) => if (r.nextDouble()  .20) r.nextDouble() else v }
    mxB := { (_, _, v) => if (r.nextDouble() < .20) r.nextDouble() else v }
{code}



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