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https://issues.apache.org/jira/browse/SOLR-11808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16307279#comment-16307279
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ASF subversion and git services commented on SOLR-11808:
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Commit 657a35152910a8981af4d5164a6c3c98ff726bb2 in lucene-solr's branch
refs/heads/branch_7x from [~joel.bernstein]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=657a351 ]
SOLR-11808: Add sumSq Stream Evaluator
> Add sumSq Stream Evaluator
> ----------------------------
>
> Key: SOLR-11808
> URL: https://issues.apache.org/jira/browse/SOLR-11808
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Fix For: 7.3
>
> Attachments: SOLR-11808.patch
>
>
> This ticket adds the *sumSq* function to Streaming Expression statistical
> function library. The sumSq function sums the squares of all the values in an
> array. This is often used when evaluating the residuals of a regression model.
> Implementation provided by Apache Commons Math.
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