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https://issues.apache.org/jira/browse/MAHOUT-636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13014285#comment-13014285
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Hudson commented on MAHOUT-636:
-------------------------------

Integrated in Mahout-Quality #708 (See 
[https://hudson.apache.org/hudson/job/Mahout-Quality/708/])
    

> Remove CompactRunningAverage
> ----------------------------
>
>                 Key: MAHOUT-636
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-636
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Collaborative Filtering
>    Affects Versions: 0.4
>            Reporter: Sean Owen
>            Assignee: Sean Owen
>            Priority: Minor
>              Labels: average, difference
>             Fix For: 0.5
>
>
> CompactRunningAverage doesn't help on 64-bit machines, and makes little 
> difference on 32-bit machines. It's probably not worth keeping going forward. 
> Instead, saving memory could be accomplished better through use of parallel 
> arrays and such.

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