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https://issues.apache.org/jira/browse/SOLR-10626?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joel Bernstein resolved SOLR-10626.
-----------------------------------
Resolution: Resolved
Fix Version/s: master (7.0)
6.6
> Add covariance Stream Evaluator
> -------------------------------
>
> Key: SOLR-10626
> URL: https://issues.apache.org/jira/browse/SOLR-10626
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
> Fix For: 6.6, master (7.0)
>
> Attachments: SOLR-10626.patch
>
>
> The covariance Stream Evaluator calculates the covariance of two columns of
> numbers.
> Syntax:
> {code}
> c=cov(cola,colb)
> {code}
> The implementation is provided by Apache Commons Math
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