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Posted to issues@commons.apache.org by "Dimitri Pourbaix (JIRA)" <ji...@apache.org> on 2010/08/14 23:59:16 UTC
[jira] Created: (MATH-406) Wrong weight handling in
Levenberg-Marquardt
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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[jira] Resolved: (MATH-406) Wrong weight handling in
Levenberg-Marquardt
Posted by "Dimitri Pourbaix (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MATH-406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dimitri Pourbaix resolved MATH-406.
-----------------------------------
Resolution: Fixed
> 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
>
> Attachments: MATH-406.patch
>
>
> 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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[jira] Updated: (MATH-406) Wrong weight handling in
Levenberg-Marquardt
Posted by "Dimitri Pourbaix (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MATH-406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dimitri Pourbaix updated MATH-406:
----------------------------------
Attachment: MATH-406.patch
Correction patch.
> 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
>
> Attachments: MATH-406.patch
>
>
> 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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You can reply to this email to add a comment to the issue online.