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From "Dimitri Pourbaix (JIRA)" <j...@apache.org>
Subject [jira] Created: (MATH-406) Wrong weight handling in Levenberg-Marquardt
Date Sat, 14 Aug 2010 21:59:16 GMT
Wrong weight handling in Levenberg-Marquardt
--------------------------------------------

                 Key: MATH-406
                 URL: https://issues.apache.org/jira/browse/MATH-406
             Project: Commons Math
          Issue Type: Bug
    Affects Versions: 2.1
            Reporter: Dimitri Pourbaix
            Assignee: Dimitri Pourbaix
             Fix For: Nightly Builds


A comparison with a Fortran version of Levenberg-Marquardt reveals that when observations
have different weights, the 2.1 version reaches a value of the function which does not necessary
correspond to the minimum

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