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https://issues.apache.org/jira/browse/MATH-805?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Neidhart resolved MATH-805.
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Resolution: Fixed
Fix Version/s: 3.1
Fixed in r1364318.
> Percentile calculation is very slow when input data are constants
> -----------------------------------------------------------------
>
> Key: MATH-805
> URL: https://issues.apache.org/jira/browse/MATH-805
> Project: Commons Math
> Issue Type: Improvement
> Affects Versions: 3.0
> Reporter: Benoit de Rancourt
> Assignee: Thomas Neidhart
> Priority: Minor
> Labels: performance, test
> Fix For: 3.1
>
>
> I use the Percentile class to calculate quantile on a big array (10^6
> entries). When I have to test the performance of my code, I notice that the
> calculation of quantile is at least 100x slower when my data are constants
> (10^6 of the same nomber). Maybe the Percentile calculation can be improved
> for this special case.
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