commons-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Gilles (JIRA)" <>
Subject [jira] [Commented] (MATH-914) Inconsistent multi-start randomization (optimizers)
Date Thu, 13 Dec 2012 13:34:12 GMT


Gilles commented on MATH-914:

In revision 1421287, I've marked (with "XXX") the code that should be revised.
I don't think that it is a blocking issue (it is also present in the "optimization" package),
but anyone is welcome to provide a patch if a fix is quickly found.

> Inconsistent multi-start randomization (optimizers)
> ---------------------------------------------------
>                 Key: MATH-914
>                 URL:
>             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.

This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see:

View raw message