Laaziz Lahlou

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Recent activity by Laaziz Lahlou Recent activity Votes
  • Model becomes infeasible after relaxation

    Answered

    Hi all, I have an optimization problem for which I am able to get the optimal solution in which I have binary variables. When I relax the variable to take values between 0 and 1, the model becomes ...

  • issue with Model.addGenConstrMax()

    Answered

    I have a mathematical model \(P\) for which I optimize two cost functions say \(F_1\) and \(F_2\) subject to a set of constraints.  In \(F_2\), I want it to be included only when its expression vio...

  • Issue with general constraint

    Ongoing

    Hi all, I have the following objective function to implement where Beta and Alpha are decision variables, Delta, Sigma, gamma and tolerance are parameters. The second part of the objective functio...

  • Pulling out the runtime value seeming to not work properly in Gurobi 9.0

    Answered

    Hi, I am getting a strange result from Gurobi 9.0 when I try to pull out the runtime. From the statistics I get this : Multi-objectives: solved in 0.11 seconds, solution count 6 However, when I do ...

  • Why Objective must be liearn for multi-objective model in Gurobi ?

    Answered

    Hi all, I have a multi-objective optimization problem where in some of the cost functions I do have a product of two decision variables. The form of the optimization problem embeds the assignment p...