Mario Ruthmair

Hi Tjard, I have an idea of what could be the reason for this behaviour, but let me first try to understand your Benders model and approach correctly. Please correct me on the following statements:...

If there are no constraints in the initial master problem and not added Benders cuts that cut off optSol#1, and you obtain an "optimal" solution that is worse than optSol#1, then there is something...

Hi, To your first question, why you do not get the same result when adding all generated cuts initially to your master problem: In the second case, the solver follows a different solution path, so ...

Hi Mohammad, Here are a few general recommendations: What hardware should I select when running Gurobi? One Gurobi run might not be able to keep all 2x32 cores busy all the time since not all part...

Hi Nefeli, Where are you currently stuck?If you want to run Gurobi in an online environment (provided that the hoster allows that), you need a WLS license: Academic WLS license How do I set up a W...

Yes, every model can be built in matrix form. You must define the coefficient matrix first and then multiply with matrix variables. But the code will probably not be easy to read and debug anymore....

Hi, You could try to use model.addConstrs() to create all constraints in one step, but this might not be too much different to your loop variant. With respect to term-based modelling, you seem to h...

The found optimal solution is defined by the solution values of all variables in the model. If variables have a non-zero value, then they are part of the optimal solution. If you think too many var...

Hi Muhammad, This is coming from our Gurobi AI Guide: To filter and print only the non-zero decision variable values in your Gurobi optimization model, you can modify your existing code snippet to ...

Hi Yanxin Shen, Numerical troubles can originate from numerical instabilities in the model structure. Here are some guidelines in this respect. If the model is at the border of (in)feasibility, the...