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https://issues.apache.org/jira/browse/MATH-819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13598658#comment-13598658
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Thomas Neidhart commented on MATH-819:
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Ok, but keep in mind that you have to use the SimplexSolver in the new optim
package. The whole optimization package has been refactored so a few things
have changed, but the principle is the same of course.
Also this change will only be available from the 3.2 release, or you can test
with the latest trunk of course.
> SimplexSolver - InfeasibleSolution when feasible
> ------------------------------------------------
>
> Key: MATH-819
> URL: https://issues.apache.org/jira/browse/MATH-819
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 3.1
> Environment: Windows 7, JDK 1.7.0_03
> Reporter: Raghu Rangarajan
> Assignee: Thomas Neidhart
> Fix For: 3.2
>
> Attachments: CommonsSolver2.java, lp-octave.txt, test.log, test.mod,
> test.out
>
>
> I am seeing an odd behavior with the latest code in the main trunk (Directory
> revision: 1358535). The solver throws "NoFeasibleSolutionException" for a
> problem which has a feasible solution. Just by commenting out the last
> constraint, we get a feasible solution. And for that solution, the constraint
> in question does not seem to be playing a role.
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