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https://issues.apache.org/jira/browse/MAHOUT-1882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15812561#comment-15812561
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Pat Ferrel commented on MAHOUT-1882:
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Can't see that I use this, at least not obviously unless it is hidden in
another call. Can you try removing the method and see who complains?
> SequentialAccessSparseVector inerateNonZeros is incorrect.
> ----------------------------------------------------------
>
> Key: MAHOUT-1882
> URL: https://issues.apache.org/jira/browse/MAHOUT-1882
> Project: Mahout
> Issue Type: Bug
> Components: Math
> Affects Versions: 0.12.2
> Reporter: Andrew Palumbo
> Assignee: Suneel Marthi
> Priority: Critical
> Fix For: 0.13.0
>
>
> In {{SequentialAccessSparseVector}} a bug is noted. When Cuonting Non-Zero
> elements {{NonDefaultIterator}} can, under certain circumstances give an
> incorrect iterator of size different from the actual non-zeroCounts.
> {code}
> @Override
> public Iterator<Element> iterateNonZero() {
> // TODO: this is a bug, since nonDefaultIterator doesn't hold to non-zero
> contract.
> return new NonDefaultIterator();
> }
> {code}
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