Re: [Help-glpk] [Fwd: mip behavior]

[Michael Hennebry]

On Fri, 15 Apr 2011, Andrew Makhorin wrote:

> Currently the objective granularity check is disabled because of the new
> mip preprocessor, which is still incomplete. Sorry.
>
> If you know that your objective is integer, you may specify an
> appropriate mip gap as Marcelo suggested (say, 0.06 for your example) to
> stop the search once the optimum has been found.

A problem with mip gap is that it is fractional.
What does he use if the minimum objective might be -1 or +600?

Using a callback would seem a better option.

--
Michael   address@hidden
"Pessimist: The glass is half empty.
Optimist:   The glass is half full.
Engineer:   The glass is twice as big as it needs to be."