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https://issues.apache.org/jira/browse/MATH-1103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13914645#comment-13914645
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Evan Ward commented on MATH-1103:
---------------------------------

Gilles solution is o.k. by me. Let's add some documentation to the interface 
since I think users will be implementing both Optimizer and Problem.

I put the patches in the same issue because the tests in #1 still fail for LM 
due to the bug fixed in #2.

Fixing #1 here is making me rethink the Jacobian copying issues. Maybe it is 
best to have a copy of the Jacobian for each Evaluation so that there aren't 
stale data issues. (Slower and safer) I think we could still apply diagonal 
weights without copying the Jacobian matrix.

> Convergence Checker Fixes
> -------------------------
>
>                 Key: MATH-1103
>                 URL: https://issues.apache.org/jira/browse/MATH-1103
>             Project: Commons Math
>          Issue Type: Bug
>            Reporter: Evan Ward
>         Attachments: 0001-Fix-checker-seeing-not-old-point.patch, 
> 0002-Fix-switched-iterations-and-evaluations.patch
>
>




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