[jira] [Resolved] (MATH-914) Inconsistent multi-start randomization (optimizers)

["Luc Maisonobe (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MATH-914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Luc Maisonobe resolved MATH-914.
--------------------------------

    Resolution: Fixed

Fixed in subversion repository as of r1454746.
                
> Inconsistent multi-start randomization (optimizers)
> ---------------------------------------------------
>
>                 Key: MATH-914
>                 URL: https://issues.apache.org/jira/browse/MATH-914
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 3.0, 3.1
>            Reporter: Gilles
>            Priority: Minor
>             Fix For: 3.2
>
>
> In class "o.a.c.m.optim.BaseMultiStartMultivariateOptimizer", the "starting points" generator is passed at construction. But random initial guesses must fulfill the bound constraint and be somehow related to the user-supplied initial guess; and those are passed to the "optimize" method and thus can change from one call to the other, leading to inconsistent (and probably useless) multi-starts.

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