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From "Joel Bernstein (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-10633) Add cosAngle Stream Evaluator
Date Thu, 25 May 2017 02:53:04 GMT

    [ https://issues.apache.org/jira/browse/SOLR-10633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16024107#comment-16024107
] 

Joel Bernstein commented on SOLR-10633:
---------------------------------------

Actually the Apache Commons Numbers project seems to have the preferred implementation.

> Add cosAngle Stream Evaluator
> -----------------------------
>
>                 Key: SOLR-10633
>                 URL: https://issues.apache.org/jira/browse/SOLR-10633
>             Project: Solr
>          Issue Type: New Feature
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Joel Bernstein
>            Assignee: Joel Bernstein
>             Fix For: master (7.0)
>
>
> This ticket will add a cosAngle Stream Evaluator to calculate the cosine angle between
two vectors. 
> {code}
> a = cosAngle(colA, colB)
> {code}
> The implementation is provided by Apache Commons Numbers



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