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From "Roman Werpachowski (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MATH-362) LevenbergMarquardtOptimizer ignores the VectorialConvergenceChecker parameter passed to it
Date Tue, 06 Apr 2010 17:21:33 GMT

    [ https://issues.apache.org/jira/browse/MATH-362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12854071#action_12854071
] 

Roman Werpachowski commented on MATH-362:
-----------------------------------------

I would keep using orthoTolerance as it is used now:

292                if (maxCosine <= orthoTolerance) {
293                    // convergence has been reached
294                    return new VectorialPointValuePair(point, objective);
295                }

and then use costRelativeTolerance & parRelativeTolerance if and only if the convergence
checker is null, otherwise use the convergence checker and ignore {costRelativeTolerance,
parRelativeTolerance}.

What I am missing now is the ability to bail out if the absolute distance from the target
falls below some value ("close enough").

> 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
>            Reporter: Roman Werpachowski
>
> LevenbergMarquardtOptimizer ignores the VectorialConvergenceChecker parameter passed
to it. This makes it hard to specify custom stopping criteria for the optimizer.

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