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Re: [Help-glpk] precision for MIP


From: Robert Fourer
Subject: Re: [Help-glpk] precision for MIP
Date: Mon, 21 Mar 2005 09:57:11 -0600
User-agent: Microsoft-Entourage/10.0.0.1309

You might want to look at the EXLP package referenced in the LP FAQ
(http://www-unix.mcs.anl.gov/otc/Guide/faq/linear-programming-faq.html).  At
least, it might provide some inspiration.

You might also want to reconsider why you have such large coefficients to
begin with.  Perhaps there are insights that would lead to a more tractable
formulation.

Bob Fourer
address@hidden


In reply to the message from >>> David Stephenson
<address@hidden> received 3/21/05 9:00 AM:

> I am getting quite a few numerical instability (dual simplex) warnings
> while solving a MIP problem with coefficients on the order of 10^8, and
> so I'm considering trying to integrate an arbitrary precision package
> into the GLPK code.
> 
> Has anyone out there already tried this?
> 
> DS
> 
> _______________________________________________
> Help-glpk mailing list
> address@hidden
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> 





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