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https://issues.apache.org/jira/browse/MATH-273?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Luc Maisonobe resolved MATH-273.
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Resolution: Fixed
Assignee: Luc Maisonobe
fixed in subversion repository as of r781304
patch applied
thanks
> Basic variable is not found correctly in simplex tableau
> --------------------------------------------------------
>
> Key: MATH-273
> URL: https://issues.apache.org/jira/browse/MATH-273
> 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 code.
> 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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