Maliheh Aramon

Hi Lukas,  An easier approach might be to use the SolutionLimit parameter as a termination criterion. By setting the SolutionLimit parameter to 1, the optimization would terminate as soon as one fe...

Hi Grzegorz, Variable bounds are not a convenience feature for adding simple model constraints. Internally, Gurobi treats variable bounds differently than constraints. An optimization problem can h...

Hi Grzegorz, As you already know, we can think of dual variables as a vector of shadow prices for the right-hand-side vector of the primal problem. In your example, the \(i\)-th constraint represen...

Hi Alexia,  The parameters MIPGap and MIPGapAbs are indeed the performance metrics that can be used to quantify how good or bad a current solution is compared to the optimal solution. A MIPGap of 1...

Hi Murilo, When I say an unfeasible solution, I mean that the solution does not respect all restrictions. Sure, I get this. My point is MIPSOL callback is invoked only if a new incumbent solution...

Hi Anastasios,  Are you using a Linux machine? Have you checked our How do I use Gurobi with PyCharm (Section: Note for Linux users) article or the Software Installation Guide (for Linux)? You like...

Hi Tobias,  Simplex algorithms are sequential methods and are not amenable to parallelization. Therefore, increasing the number of cores does not have any impact.  Since the barrier algorithm outpe...

Hi Tobias,  One point before getting into your question: It seems that you are using Gurobi 9.1.1, we always recommend using the latest version of Gurobi which is 9.1.2 right now. The log file sh...

Hi Veronika,  Some of the presolve procedures such as dual presolve/presolving reductions rely on knowing the feasible region in its entirety. Since it is not possible to know the whole feasible re...

Hi Tobias,    Have you checkout the article on "Does using more threads make Gurobi faster?"?    Increasing the number of threads does not necessarily speed up the optimization algorithm. How many ...