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From "Gilles (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-655) General framework for iterative algorithms
Date Fri, 02 Sep 2011 13:48:10 GMT

    [ https://issues.apache.org/jira/browse/MATH-655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13095983#comment-13095983
] 

Gilles commented on MATH-655:
-----------------------------

Do you mean that you are going back to the solution of merging monitoring with "actual work"?
If so, I'd prefer that you focus on the "actual work" part and leave the monitoring on the
side for the time being. Otherwise, we'll again be stuck with methods that can't be removed
because of the backward compatibility requirement...


> General framework for iterative algorithms
> ------------------------------------------
>
>                 Key: MATH-655
>                 URL: https://issues.apache.org/jira/browse/MATH-655
>             Project: Commons Math
>          Issue Type: New Feature
>    Affects Versions: 3.0
>            Reporter: S├ębastien Brisard
>            Priority: Minor
>              Labels: algorithm, events
>         Attachments: iterative-algorithm.zip
>
>
> Following the thread [Monitoring iterative algorithms|http://mail-archives.apache.org/mod_mbox/commons-dev/201108.mbox/%3CCAGRH7HrgcgoBA=jcoKovjiQU=TjpQHnspBkOGNCu7oDdKk=K4w@mail.gmail.com%3E],
here is a first attempt at defining a general enough framework for iterative algorithms at
large. At the moment, the classes provide support for
> * maximum number of iterations
> * events handling
> ** initialization event (prior to entering the main loop),
> ** iteration event (after completion of one iteration),
> ** termination event (after termination of the main loop).
> These classes do not yet provide support for a stopping criterion.
> Some points worth to note
> * For the time being, the classes are part of the o.a.c.m.linear package.
> * For the time being, {{IterativeAlgorithm.incrementIterationCount()}} throws a {{TooManyEvaluationsException}}.
If the proposed new feature is integrated into CM, then a proper {{TooManyIterationsException}}
should be created, from which the former could derive.

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