Originally posted by: DX3H_Liu_Weiguo

Hey,
In my MIP, I have defined two sets of variables. One is decision variable and the other is not but still necessary.
What I want to do is just store decision variable in the nodes during solving.
Does CPLEX provide such a feature?

Weiguo
#DecisionOptimization
#MathematicalProgramming-General

Originally posted by: SystemAdmin

Any variable that appears in any constraint or in the objective function (and is not removed during presolve) will be stored in the node records. I do not think there is any way to avoid that. Programming variables that you compute for your own purposes but that do not appear anywhere in the model will not be stored (and CPLEX will be unaware of them).

Paul

Mathematicians are like Frenchmen: whenever you say something to them, they translate it into their own language, and at once it is something entirely different. (Goethe)
#DecisionOptimization
#MathematicalProgramming-General