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From "Luc Maisonobe (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (MATH-395) Bugs in "BrentOptimizer"
Date Wed, 23 Mar 2011 20:15:05 GMT

     [ https://issues.apache.org/jira/browse/MATH-395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Luc Maisonobe closed MATH-395.
------------------------------


Closing issue as it was included in version 2.2, which has been released

> Bugs in "BrentOptimizer"
> ------------------------
>
>                 Key: MATH-395
>                 URL: https://issues.apache.org/jira/browse/MATH-395
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 2.1
>            Reporter: Gilles
>            Assignee: Gilles
>             Fix For: 2.2
>
>
> I apologize for having provided a buggy implementation of Brent's optimization algorithm
(class "BrentOptimizer" in package "optimization.univariate").
> The unit tests didn't show that there was something wrong, although (from the "changes.xml"
file) I discovered that, at the time, Luc had noticed something weird in the implementation's
behaviour.
> Comparing with an implementation in Python, I could figure out the fixes. I'll modify
"BrentOptimizer" and add a test. I also propose to change the name of the unit test class
from "BrentMinimizerTest" to "BrentOptimizerTest".

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