Amin Ahmadi
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Recent activity by Amin Ahmadi
MIPGAP not closed
AnsweredHello, I am solving a locationtransportation optimization problem (GurobiPython) that is not challenging with the small number of nodes according to the literature. In order to optimize the sol...

How add constraints temporarily to the model?
OngoingHi, I am implementing an iterative method for solving a problem. We need to have a set of constraints in the model at one iteration but not necessary for the subsequent iterations. One way is to re...

Customized branching rule
AnsweredI have three questions about the selection strategy in the B&B method in Gurobi. As I understood, we cannot find out how Gurobi branches in each iteration. But, I need to control the branching stra...

Copying Model
AnsweredHello, I generate a model with several decision variables and constraints. Let's call it Model_1. Next, I want to use Model_1 and add new constraints to it in a while loop. However, after the loop...

Large LP problem
I want to solve a large lp problem until the first feasible solution is found. (I do not want to spend too much time on it). Also, I want to give 5 minutes extra time to find a possible better sol...