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[Help-glpk] SOS1/SOS2 in GLPK?

From: Yaron Kretchmer
Subject: [Help-glpk] SOS1/SOS2 in GLPK?
Date: Wed, 14 Oct 2009 20:13:31 -0700

Hi There.
At work i encounter a lot of "SOS' type problems - mostly when i want to model "choose exactly one member of a group". Currently I model this with binary variables, whose sum i constraint to be less than 1. Modeling this using SOS seems like a better approach- more compact, and also could yield better MIP results.
Are SOS's supported in glpk? If not, any reason why?


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