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https://issues.apache.org/jira/browse/SYSTEMML-1008?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm resolved SYSTEMML-1008.
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Resolution: Fixed
Assignee: Matthias Boehm
Fix Version/s: SystemML 0.11
> RemoveEmtpy w/ selection vector and nnz=0 produces wrong output
> ---------------------------------------------------------------
>
> Key: SYSTEMML-1008
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1008
> Project: SystemML
> Issue Type: Bug
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Priority: Blocker
> Fix For: SystemML 0.11
>
>
> RemoveEmtpy with selection vector always has to respect the selection vector
> over the actual data. If the input matrix has no non-zero entries, however,
> we currently produce incorrect results of an empty row/column output vector.
> For example, the following script should print {{nrow (A) = 10, nrow (C) =
> 10}} but prints {{nrow (A) = 10, nrow (C) = 1}}.
> {code}
> A = matrix (0, rows = 10, cols = 1);
> B = matrix (1, rows = 10, cols = 1);
> C = removeEmpty (target = A, margin = "rows", select = B);
> print ("nrow (A) = " + nrow (A) + ", nrow (C) = " + nrow (C));
> {code}
> Thanks to [~ae2015] for catching this.
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