gams:i_know_a_better_solution

Sometimes users send us a model with the statement: the solver found a solution `x`

with objective value `z`

, but I know a better solution y which has objective value `z*`

. The solver can sometimes help checking such a conjecture by fixing the variables to the proposed solution, and see if this causes any infeasibilities:

* enter data for proposed solution PARAMETER P(I) proposed solution / i1 1.0 i2 2.0 i3 3.0 /; * fix variables X.FX(I) = P(I); * and let solver check if this is a feasible solution SOLVE M USING MIP MINIMIZING Z;

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gams/i_know_a_better_solution.txt · Last modified: 2008/10/24 12:56 by support