Alexia Payan

Hello All, I have a multi-objective hierarchical optimization problem with about 450,000 variables (integer) and 355,000 constraints. After about 11 hours, the MIP gap for the first objective is 10...

Hello, I am trying to maximize the revenues from building various products while minimizing the number of machines used to make those products (i.e. increase the utilization of these machines). The...

I a considering a hierarchical objective optimization.  The first objective already takes a long time to "solve" to a given gap, say 3%. When adding the second objective, the runtime is increased b...

Hello All, I get the following output from my model solve: What does the current node "cutoff" objective mean? I still get an optimal solution printout after this happens with a gap of 11.1% corre...

Hello All, Is it possible to print the LP solution corresponding to the best bound objective value at a given time during the optimization, for example when an integer solution to the MIP is found?...