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https://issues.apache.org/jira/browse/MATH-1108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13920637#comment-13920637
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Buharov Alexander commented on MATH-1108:
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Hi Thomas,
thank you for your answer.
I really got solution, after changing criteria ( for case | s * v | <= 1e-6 ).
I can't set lower bounds as 0. Because this example is only one situation ( in
common case: bounds for different variables are differed).
But now I can calculate solution (though need around 10 minutes). It already is
good.
There are solvers which can calculate my problem faster, but I sought just java
- lib. Thank you for help!
> SimplexSolver returns TooManyIterationsException
> ------------------------------------------------
>
> Key: MATH-1108
> URL: https://issues.apache.org/jira/browse/MATH-1108
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 3.2, 3.1.1
> Reporter: Buharov Alexander
> Attachments: Problem.zip
>
>
> We have vector v and matrix s (from file S.txt)
> v - vector ( size: 1*649 )
> s - matrix ( size: 554*649 )
> We want solve linear problem:
> * max (v[31])
> * Bounds:
> * s*v = 0
> * -1 <= v[i] <= 1 for i=0,..., 648
> We changed MaxIter parameter (from 100 to 1e+6). And we changed epsilon (
> set default value and 1e-3). But solver always throws
> TooManyIterationsException (and work very slow).
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