Jonasz Staszek

Hi Anh, generally you should be able to achieve your objective by setting the SolutionLimit parameter to 1 - Gurobi will then terminate after finding the first integer-feasible solution. I can't pr...

Hi Anna, when you deactivate crossover, the barrier method may return a mid-face solution. An interesting discussion on this topic can be found here. Since your problem is MILP, Gurobi will need a ...

After a brief Google search I see that ConcreteModel() might be a pyomo-specific constructor. Are you using pyomo? If yes, I would redirect you to consult pyomo's documentation for further clarific...

How do you know which \(j\) index is to be used for the \(x\)-variable on the right-hand side of your constraint? This is probably the reason for your difficulties. I am not sure if I understood th...

What is your \(model\) object? Is it a gurobipy model? It needs to be one, otherwise the method won't work or its behavior could be different to what we expect to see. Best regardsJonasz

Looking from afar it seems to me that there is a problem with your \(j\) index - perhaps the for-loop is in the wrong place? Could you show the mathematical formulation of the constraint you would ...

Hi Joana, if you want to add a variable using Gurobi Python API, you need to use its syntax. Adding a single variable is usually done by the command model.addVar(). If you use a different modelling...

Hi Norbert, judging by both this question and the other one you posted, your problem seems to be a large and complex one. Without knowing the entire context it is difficult to suggest a single form...

Hi Xinshuo, perhaps this post will shed some light. Best regardsJonasz

Hi Santanu, I am afraid that the change you request would take a lot of time, and many of the algorithms Gurobi uses would not be as efficient as they are for binary programs. As a workaround, you ...