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https://issues.apache.org/jira/browse/MAHOUT-630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13009758#comment-13009758
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Hudson commented on MAHOUT-630:
-------------------------------
Integrated in Mahout-Quality #684 (See
[https://hudson.apache.org/hudson/job/Mahout-Quality/684/])
MAHOUT-630 weighted average fix and add stddev
> Small bug in WeightedRunningAverage; add WeightedRunningAverageAndStdDev
> ------------------------------------------------------------------------
>
> Key: MAHOUT-630
> URL: https://issues.apache.org/jira/browse/MAHOUT-630
> Project: Mahout
> Issue Type: Bug
> Components: Collaborative Filtering
> Affects Versions: 0.4
> Reporter: Sean Owen
> Assignee: Sean Owen
> Priority: Minor
> Labels: average, standard-deviation, weighted
> Fix For: 0.5
>
> Attachments: MAHOUT-630.patch
>
>
> There's a problem in the WeightedRunningAverage handling of a new weighted
> datum. While looking at that I said, hey, we could use
> WeightedRunningAverageAndStdDev to go with it. And some tests.
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