Jaromił Najman

Thank you for sharing the code, Junlin.You said that the sudden drop in the best bd is unexpected, because there should be a solution which is better than the one reported by Gurobi. Are you able t...

Hi Junlin Qu,Could you please explain why such a sharp drop in BestBd might occur? A deep explanation would be very helpful—I believe I can understand the technical details.It is possible that a gl...

Any ideas on debugging to figure out the issue?Could you please share the log outputs of the disagreeing runs? Could you in best case share the model and parameters which lead to different optimal ...

Hi Saeed,It is possible to directly write the function by using the addGenConstrNL method. You would have to define an auxiliary variable \(Z'\) as you already do and then the code would look simil...

Hi Saeed, You could use the Model.getA() method to get the constraint matrix in \(\texttt{scipy.sparse}\) format. You can then use the scipy transpose method to get the transpose of your \(A\) matr...

Hi Muhamad, It is possible that the optimal solution point is the same but the objective value is different. A trivial example would be an objective with and without a constant. What you should che...

Hi Fabiana, Gurobi's MATLAB API supports quadratic (nonconvex) objectives. Please have a look at the qp.m example and the corresponding documentation. Best regards, Jaromił

This post is more than three years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please creat...

Hi Dai Nam Nguyen, Unfortunately, Gurobi currently does not support automatic Benders decomposition. As an alternative, you might want to have a look at open-source packages such as the SCIP Bender...

Hi Lei, Could you please update to Gurobi version 12 and try again. If you are not able to upgrade to version 12, please try setting the FuncNonlinear parameter to 1. This will tell Gurobi to treat...