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From "Thomas Neidhart (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MATH-891) SpearmansCorrelation fails when using NaturalRanking together with NaNStrategy.REMOVED
Date Thu, 08 Nov 2012 18:32:11 GMT
Thomas Neidhart created MATH-891:
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             Summary: SpearmansCorrelation fails when using NaturalRanking together with NaNStrategy.REMOVED
                 Key: MATH-891
                 URL: https://issues.apache.org/jira/browse/MATH-891
             Project: Commons Math
          Issue Type: Bug
            Reporter: Thomas Neidhart


As reported by Martin Rosellen on the users mailinglist:

Using a NaturalRanking with a REMOVED NaNStrategy can result in an exception when NaN are
contained in the input arrays.

The current implementation just removes the NaN values where they occur, without taken care
to remove the corresponding values in the other array.

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