[jira] [Created] (MATH-1221) Improve performance of ZipfDistribution by caching the nth harmonic

[Thomas Neidhart (JIRA)]

Thomas Neidhart created MATH-1221:
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             Summary: Improve performance of ZipfDistribution by caching the 
nth harmonic
                 Key: MATH-1221
                 URL: https://issues.apache.org/jira/browse/MATH-1221
             Project: Commons Math
          Issue Type: Bug
            Reporter: Thomas Neidhart


The performance of pdf / cdf can be improved by caching the nth harmonic which 
is only dependeny on the distribution parameters.



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