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Re: [Help-glpk] Callbacks for column generation
From: |
Andrew Makhorin |
Subject: |
Re: [Help-glpk] Callbacks for column generation |
Date: |
Thu, 10 Dec 2009 05:13:47 +0300 |
> Thanks, another question, can you get the final branch and bound tree
> after the mip is solved?, i could add columns in each node and then
> add to the initial relaxation and re-optimize.
The glpk mip solver does not keep fathomed nodes, so if the mip is
solved (to optimality), the final tree is empty.