[jira] [Commented] (MAHOUT-1429) Parallelize YtransposeY in ImplicitFeedbackAlternatingLeastSquaresSolver

["Hudson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAHOUT-1429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13974564#comment-13974564 ] 

Hudson commented on MAHOUT-1429:
--------------------------------

FAILURE: Integrated in Mahout-Quality #2579 (See [https://builds.apache.org/job/Mahout-Quality/2579/])
MAHOUT-1429: Reverting the recent changes until BtJob and friends are migrated over to the new API (smarthi: rev 1588571)
* /mahout/trunk/core/src/main/java/org/apache/mahout/common/IOUtils.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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