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https://issues.apache.org/jira/browse/MAHOUT-1429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13918647#comment-13918647
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Hudson commented on MAHOUT-1429:
--------------------------------
SUCCESS: Integrated in Mahout-Quality #2500 (See
[https://builds.apache.org/job/Mahout-Quality/2500/])
MAHOUT-1429 Parallelize YtransposeY in
ImplicitFeedbackAlternatingLeastSquaresSolver (ssc: rev 1573773)
* /mahout/trunk/CHANGELOG
*
/mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/als/SolveImplicitFeedbackMapper.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/svd/ALSWRFactorizer.java
*
/mahout/trunk/math/src/main/java/org/apache/mahout/math/als/ImplicitFeedbackAlternatingLeastSquaresSolver.java
> Parallelize YtransposeY in ImplicitFeedbackAlternatingLeastSquaresSolver
> ------------------------------------------------------------------------
>
> Key: MAHOUT-1429
> URL: https://issues.apache.org/jira/browse/MAHOUT-1429
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Affects Versions: 0.9
> Reporter: Adam Ilardi
> Assignee: Sebastian Schelter
> Priority: Minor
> Labels: newbie, patch, performance
> Fix For: 1.0
>
> Attachments: MAHOUT-1429.patch
>
>
> I wrote a simple patch to do the calculation in parallel. It could be better
> but it gets the job done. Is there some other (Matrix transpose dot matrix)
> code in mahout that is already parallel? I will reuse that if it exists.
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