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From "Benoit de Rancourt (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MATH-805) Percentile calculation is very slow when input data are constants
Date Tue, 12 Jun 2012 15:15:43 GMT
Benoit de Rancourt created MATH-805:
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             Summary: 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
            Priority: Minor


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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