Silke Horn

Hi Prasanna, Counting the total number of feasible solutions is a very difficult problem and this number can easily get gigantic. Gurobi cannot do this since it is not an optimization problem. You ...

Hi, You are right that Gurobi currently does not provide any SDP algorithms. Our development team is considering this feature, but we cannot make any promises. Have you looked at the SDP plugin of ...

By default, all variables have a lower bound of 0. You should change the definition of y as follows: y = m.addVar(lb=-gp.GRB.INFINITY, name = 'y')

Thanks for adding more details. You can modify your model, then simply call optimize again. Gurobi will then use the known solution the warm-start the second optimization. With the scenario feature...

I'm not sure I fully understand what you want to do. If you simply want to evaluate a different objective function at the current solution, you can define a new expression and then use the getValue...

Hi Bill, Welcome to the Gurobi Community! I am not quite sure I understand your question. Do you want your expression boben to be allowed to take exactly the values in the array bobeh (1, 2, or 3)?...

Hi Tanuj, We don't recommend writing LP files by hand. Why don't you use an API to create the LP file? There are multiple issues with your file. E.g.: You can only model univariate polynomials (i....

Hi Ibtissam, Could you try without mul[(i,j)] = f_3[(i,j)]*o[(i,j)] ? Best regards,Silke

Hi Ibtissam, In the line quicksum( M_3[i] * f_3[(i,j)] * o[(i,j)] for i in range(L) for j in range(R) ) you are trying to add products of three variables. This is not supported. You can only have p...

Hi, There are two issues with your code: Firstly, because of Gurobi's lazy update approach, model.getVars() returns an empty list at this point. This is one of the rare occasions where you need to ...