Paula Fermin Cueto

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Latest activity by Paula Fermin Cueto
  • Paula Fermin Cueto commented,

    Thank you very much for your answer. I understand now. What an interesting example!

  • Paula Fermin Cueto created a post,

    Strange log: infeasible root relaxation, feasible MIP

    Answered

    Hello, I am getting a strange log with the MIP I'm trying to solve. The MIP is feasible, as proved by the optimal solution displayed below. However, the log says "infeasible" for the root relaxatio...

  • Paula Fermin Cueto commented,

    Hi Jaromił,  Thank you very much for this clarification. It is going to be tricky to control the size of the problem. I really want to avoid destroying the warm-start without keeping redundant rows...

  • Paula Fermin Cueto created a post,

    Issue with warm-start after changing rows

    Answered

    Sometimes I need to change the variable coefficient of a constraint and then reoptimise from the previous solution. Whenever this change makes the problem primal infeasible, the dual simplex doesn'...

  • Paula Fermin Cueto commented,

    Hi Jaromił, That makes sense, thank you for confirming this. Paula

  • Paula Fermin Cueto created a post,

    Primal and dual simplex

    Answered

    How does Gurobi go about re-optimising an LP model when we add both rows and columns to the model from the last solve? Does it do it sequentially, i.e. add columns -> warm start primal simplex -> a...