Re: Output the presolved model

Andrew Makhorin <[email protected]> Mon, 21 Jul 2025 17:01:59 +0300
Newsgroups gmane.comp.gnu.glpk
Message-ID <[email protected]>
On Mon, 2025-07-21 at 10:15 +0930, Prabhu Manyem wrote:
> For mixed integer programming (MIP) with GLPK, how can I obtain the
> presolved model (output the reduced model after the application of
> presolve)?=C2=A0 Thanks.
>=20
>=20

This feature is not provided, because to see connections between the=20
source and presolved models one needs knowing presolver data stored in
internal data structures and not available at API level. So the only
way to get access to the presolved model is to modify the source code
of the glp_intopt routine.