[jira] [Commented] (SOLR-10682) Add variance Stream Evaluator

["Yonik Seeley (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-10682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16009253#comment-16009253 ] 

Yonik Seeley commented on SOLR-10682:
-------------------------------------

I'm wondering if we should try to standardize the names of some of these functions across things like streaming, function queries, and json facet aggregations?  I imagine some of the may be more tightly integrated over time, and having var() in one context and variance() in another context isn't great.

The current facet aggregations we have are named: min, max, sum, sumsq, avg, unique, hll, percentile


> Add variance Stream Evaluator
> -----------------------------
>
>                 Key: SOLR-10682
>                 URL: https://issues.apache.org/jira/browse/SOLR-10682
>             Project: Solr
>          Issue Type: New Feature
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Joel Bernstein
>
> The variance Stream Evaluator will calculate the variance of a vector of numbers.
> {code}
> v = var(colA)
> {code}



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