[DyLP-tickets] [DyLP] #11: wrong basis for problem with many free variables
DyLP
coin-trac at coin-or.org
Thu Feb 21 13:05:57 EST 2008
#11: wrong basis for problem with many free variables
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Reporter: stefan | Owner: lou
Type: defect | Status: closed
Priority: normal | Component: primal
Version: | Severity: normal
Resolution: invalid | Keywords:
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Changes (by lou):
* status: new => closed
* resolution: => invalid
Comment:
Fixed by removing warning about NBFR vars in solution :-).
Seriously, dylp's answer is correct. Dylp will leave artificials in the
basis if the value is 0, and will leave free variables nonbasic if the
reduced cost is 0. The value of a NBFR variable is assumed to be 0.
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Ticket URL: <https://projects.coin-or.org/DyLP/ticket/11#comment:1>
DyLP <http://projects.coin-or.org/DyLP>
An implementation of the dynamic simplex algorithm for LP.
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