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Posted to dev@lucene.apache.org by "Joel Bernstein (JIRA)" <ji...@apache.org> on 2017/05/05 18:46:04 UTC
[jira] [Updated] (SOLR-10582) Add Correlation Stream Evaluator
[ https://issues.apache.org/jira/browse/SOLR-10582?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Joel Bernstein updated SOLR-10582:
----------------------------------
Summary: Add Correlation Stream Evaluator (was: Add Correlation Evaluator)
> Add Correlation Stream Evaluator
> --------------------------------
>
> Key: SOLR-10582
> URL: https://issues.apache.org/jira/browse/SOLR-10582
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
> Attachments: SOLR-10582.patch, SOLR-10582.patch
>
>
> The Correlation Evaluator computes the Pearson's product-moment correlation of two columns of data.
> Syntax:
> {code}
> let(a=expr,
> b=expr,
> c=col(a, fieldName),
> d=col(b, fieldName),
> tuple(corr=corr(c,d)))
> {code}
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