[Scip] Regarding expressing a constraint in a linear program

Tobias Achterberg achterberg at zib.de
Sat Sep 22 13:42:37 MEST 2007

> But one could add a constraint handler that implements SOS1  constraints 
> and at least declares solutions with both variables  nonzero as 
> infeasible, couldn't one? The constraint handler could also  suggest 
> branching on the two possibilities y1 = 0 and y2 = 0.

This is true. But adding an own constraint handler would be the "more advanced" variant which I 
guess is not what Gaurav wants to do... On the other hand, it would be nice if someone implements 
SOS1 and SOS2 constraint handlers and contributes them to SCIP.

Best, Tobias

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