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https://issues.apache.org/jira/browse/SOLR-10633?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joel Bernstein resolved SOLR-10633.
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Resolution: Duplicate
> Add cosAngle Stream Evaluator
> -----------------------------
>
> Key: SOLR-10633
> URL: https://issues.apache.org/jira/browse/SOLR-10633
> Project: Solr
> Issue Type: New Feature
> Components: streaming expressions
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Priority: Major
> Fix For: 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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