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https://issues.apache.org/jira/browse/SOLR-10682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16009357#comment-16009357
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Joel Bernstein commented on SOLR-10682:
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Overlapping names will be a problem because in Streaming Expressions a name is
mapped directly to a function implementation. Currently we have Metrics, which
are stream aggregators and Stream Evaluators which are non-stream functions.
They have different interfaces and implementations.
Rather then overloading function names, I think it makes sense to have more
specific function names.
> 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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