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From "Matt Price (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (MATH-362) LevenbergMarquardtOptimizer ignores the VectorialConvergenceChecker parameter passed to it
Date Thu, 27 May 2010 18:20:38 GMT

    [ https://issues.apache.org/jira/browse/MATH-362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12870836#action_12870836
] 

Matt Price edited comment on MATH-362 at 5/27/10 2:20 PM:
----------------------------------------------------------

I've spent that last few days trying to find a good curve fitting library for Java and got
excited when I learned of Commons Math.  Unfortunately, its curve fitting is very unreliable.
 I'm hoping that this bug is what is causing the problems that I'm seeing.  I'm comparing
data from NIST and results from DataFitX and it is apparent that Commons Math is not yet up
to the task.  My fingers are crossed that its quality in the curve fitting area will be improved
in the near future.  Keep up the good work Apache.

I've opened an issue about the problems I'm seeing, https://issues.apache.org/jira/browse/MATH-372

      was (Author: mprice):
    I've spent that last few days trying to find a good curve fitting library for Java and
got excited when I learned of Commons Math.  Unfortunately, its curve fitting is very unreliable.
 I'm hoping that this bug is what is causing the problems that I'm seeing.  I'm comparing
data from NIST and results from DataFitX and it is apparent that Commons Math is not yet up
to the task.  My fingers are crossed that its quality in the curve fitting area will be improved
in the near future.  Keep up the good work Apache.
  
> LevenbergMarquardtOptimizer ignores the VectorialConvergenceChecker parameter passed
to it
> ------------------------------------------------------------------------------------------
>
>                 Key: MATH-362
>                 URL: https://issues.apache.org/jira/browse/MATH-362
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 2.0, 2.1
>            Reporter: Roman Werpachowski
>             Fix For: 2.2
>
>
> LevenbergMarquardtOptimizer ignores the VectorialConvergenceChecker parameter passed
to it. This makes it hard to specify custom stopping criteria for the optimizer.

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