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From "Luc Maisonobe (JIRA)" <>
Subject [jira] Resolved: (MATH-273) Basic variable is not found correctly in simplex tableau
Date Wed, 03 Jun 2009 09:08:07 GMT


Luc Maisonobe resolved MATH-273.

    Resolution: Fixed
      Assignee: Luc Maisonobe

fixed in subversion repository as of r781304
patch applied

> Basic variable is not found correctly in simplex tableau
> --------------------------------------------------------
>                 Key: MATH-273
>                 URL:
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 2.0
>            Reporter: Benjamin McCann
>            Assignee: Luc Maisonobe
>             Fix For: 2.0
>         Attachments: SimplexSolverTest.patch, SimplexTableau.patch
> The last patch to SimplexTableau caused an automated test suite I'm running at work to
go down a new code path and uncover what is hopefully the last bug remaining in the Simplex
> SimplexTableau was assuming an entry in the tableau had to be nonzero to indicate a basic
variable, which is incorrect - the entry should have a value equal to 1.

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