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https://issues.apache.org/jira/browse/MAHOUT-1963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15975240#comment-15975240
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Trevor Grant commented on MAHOUT-1963:
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was this not resolved?
> 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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