[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Help-glpk] glpk multiple solutions from solver
From: |
Michael Hennebry |
Subject: |
Re: [Help-glpk] glpk multiple solutions from solver |
Date: |
Fri, 28 Jun 2013 10:49:00 -0500 (CDT) |
User-agent: |
Alpine 1.00 (DEB 882 2007-12-20) |
On Fri, 28 Jun 2013, chris wrote:
On Sat, Jun 15, 2013 at 9:57 PM, Michael Hennebry <
address@hidden> wrote:
On Thu, 13 Jun 2013, chia jia wei wrote:
On Wed, Jun 12, 2013 at 7:31 PM, Raniere Silva <address@hidden>**
wrote:
In the case of solving the problem using glp_simplex, is there any way
to
retrieve the solution in between iterations?
Look up callbacks.
Thanks for the advice.
I've tried to use the simplex algo to obtain an optimal basis.
Then, I made attached the callback listener, implemented printout of
solution at GLP_IBINGO, and used glp_intopt but i seem to be getting
solutions that do not relate to the original problem data.
I was mistaken. glp_simplex does not do callbacks.
If, as I previously inferred, you have a continous LP,
one solves it with glp_simplex.
To get the behaviour requested, one would have to edit the source code.
Print every solution after phase 1.
If you have an MILP, GLP_IBINGO is probably what you want.
Why it is not working for you, I do not know.
IIRC there are differences in how one fetches
solutions from glp_simplex and from glp_intopt.
--
Michael address@hidden
"On Monday, I'm gonna have to tell my kindergarten class,
whom I teach not to run with scissors,
that my fiance ran me through with a broadsword." -- Lily