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https://issues.apache.org/jira/browse/MAHOUT-139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12723753#action_12723753
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Grant Ingersoll commented on MAHOUT-139:
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Committed revision 788186.
> Make use of Vector Iterator capabilities where appropriate
> ----------------------------------------------------------
>
> Key: MAHOUT-139
> URL: https://issues.apache.org/jira/browse/MAHOUT-139
> Project: Mahout
> Issue Type: Improvement
> Affects Versions: 0.2
> Reporter: Grant Ingersoll
> Assignee: Grant Ingersoll
> Fix For: 0.2
>
> Attachments: MAHOUT-139.patch
>
>
> There are a bunch of places where we loop over the size of the vector when we
> should be taking advantage of the sparseness, or at least be agnostic about
> it and use an iterator.
> This patch addresses these issues in the Vector implementations and in the
> DistanceMeasure implementations
> Also adds iterateNonZero() and interateAll and drops the Iterable portion of
> Vector since it wasn't clear what it was iterating
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