Is there a parameter that shows if the solution is unique when using CPLEX?
Best answer by Marcel Hunting
View originalIs there a parameter that shows if the solution is unique when using CPLEX?
Best answer by Marcel Hunting
View originalHi
For MIP it is not easy to check whether there exists another optimal solution, with at least one integer variable having a different value. To check this you would have to resolve the MIP model once again, after forbidding the optimal solution that has been found before. This can be done using the procedure GMP::Instance::AddIntegerEliminationRows as demonstrated in the Dice example. If the objective value of the second solve differs from that of the orginal solve then the optimal solution was unique; if they are equal then the MP has multiple optimal solutions.
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