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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2018/06/19 06:35:00 UTC

[jira] [Created] (SYSTEMML-2408) Invalid empty input handling on fused mmchain XtXvy w/ minus

Matthias Boehm created SYSTEMML-2408:
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             Summary: Invalid empty input handling on fused mmchain XtXvy w/ minus
                 Key: SYSTEMML-2408
                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2408
             Project: SystemML
          Issue Type: Task
            Reporter: Matthias Boehm


We compile a single fused mmchain operator of type XtXvy but this implementation did not properly handle empty right hand side vectors (here combined_weights) in case of minus.

{code}
residuals = local_X %*% combined_weights - X[,1]
res_A = t(local_X) %*% residuals
{code}



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