David Mejía

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Recent activity by David Mejía Recent activity Votes
  • PWL approximation of trigonometric functions

    Answered

    Dear Gurobi Community, Short question. When using addGenConstrSin(x,y) or addGenConstrCos(x,y), should the variable x be in radians or degrees? Thanks for your help.

  • quicksum contraint slows solver.

    Answered

    Hi,  I´m working in a MILP model. It solves relatively fast within 10 to 15 minutes. But after adding the following two constraints, the solver takes about 4 days to solve the problem. Any idea why...

  • Solver takes to long too find Incumbent solution

    Answered

    Hi, I´m trying to solve a MILP problem with quadratic constraints. The solver is taking a fairly long time finding a incumbent solution. When it finds it, it´s when the optimization is done. The be...

  • implement conditional constraint

    Answered

    Hi,  I´ve been trying to implement this constraint: if a >=1 then b=1 else b =0 a is a continuous variable  b is a binary variable I´ve seen people using the big M to express this, but I can´t get ...

  • define a deterministic set of feasible solutions

    Answered

    Hi,   How can I define a deterministic set of feasible solutions for a variable? For example the solver can only find a solution in the following set of solutions for the variable x: x ∈ {0.1,0.2,0...