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https://issues.apache.org/jira/browse/MAHOUT-631?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved MAHOUT-631.
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Resolution: Duplicate
Oops, a network hiccup made this issue create twice. It's MAHOUT-630.
> Small bug in WeightedRunningAverage; add WeightedRunningAverageAndStdDev
> ------------------------------------------------------------------------
>
> Key: MAHOUT-631
> URL: https://issues.apache.org/jira/browse/MAHOUT-631
> 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
>
>
> 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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