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Re: [Help-glpk] control parameters and round-off error
From: |
Andrew Makhorin |
Subject: |
Re: [Help-glpk] control parameters and round-off error |
Date: |
Tue, 15 Jan 2008 01:54:38 +0300 |
Ali,
Could you post me a couple of your instances, for which you suspect
the objective to be inaccurate in the optimal solution? If so, write
them in mps format, gzip, and post me. Then I could say something
more definite. (Please do not cc them to the list.)
Did you make sure that the lp presolver is disabled?
Note that if the instance is ill-conditioned, there may be no way to
obtain solution with sufficient accuracy.
Andrew Makhorin