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https://issues.apache.org/jira/browse/SOLR-11160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joel Bernstein reassigned SOLR-11160:
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Assignee: Joel Bernstein
> Add normalDistribution, sample and kolmogorovSmirnov Stream Evaluators
> ----------------------------------------------------------------------
>
> Key: SOLR-11160
> URL: https://issues.apache.org/jira/browse/SOLR-11160
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
>
> This ticket digs deeper into *probability distributions*, which are a key
> foundation of statistics.
> Three new functions are introduced:
> 1) *normalDistribution*: This is a distribution function which returns a
> normal distribution generator. It is designed to be used with both the
> *sample* and the *kolmogorovSmirnov* functions. Eventually a function will be
> added for every distribution supported by *Apache Commons Math*.
> 2) *sample*: Returns array of numbers that conforms to a given distribution.
> You pass it a distribution function and size and it returns the array that
> conforms to the distribution.
> 3) *kolmogorovSmirnov*: Performs a goodness of fit test for distributions.
> This function can will do both a one and two side test. The one sided test
> compares a sample to a distribution function. The two sided test compares two
> samples to see if that were pulled from the same distribution.
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