Sophie Demassey

Gurobi-versary
First Comment
First Question
  • Total activity 9
  • Last activity
  • Member since
  • Following 0 users
  • Followed by 0 users
  • Votes 0
  • Subscriptions 3

Activity overview

Latest activity by Sophie Demassey
  • Sophie Demassey commented,

    Hi, here is an update: I confirm that, in my code, setSolution/useSolution never works at where=MIPSOL (i.e. useSolution returns 1e+101) but it always does (i.e. useSolution returns the actual cost...

  • Sophie Demassey commented,

    Hi, Same issue here. To solve a MINLP, I run Gurobi's B&C on a MILP relaxation and, at each MIPSOL, I either cutoff the integer node with a combinatorial cut or provides the actual MINLP solution i...

  • Sophie Demassey commented,

    And so I now have a feature request: tagged solutions to not to have to check their quality by ourselves ! Thank you very much Maliheh.

  • Sophie Demassey created a post,

    non LP-optimal heuristic integer solution at CB_MIPSOL

    Answered

    Hi,I solve a MILP with my proper callback function:At a CB_MIPSOL event, a restricted problem is solved where all integer variables are fixed to their current values in the MILP solution.If the res...

  • Sophie Demassey commented,

    Hi Elisabeth, thank you and indeed it was probably not clear, sorry. I try to explain below, but it is OK if there is no answer for now: it is more a wish for a feature, than a question.  Just like...

  • Sophie Demassey created a post,

    adjust ObjBound with CbcSetSolution

    Answered

    Hi, Gurobi will allow to set a feasible solution at a MIPSOL node, according to: https://support.gurobi.com/hc/en-us/community/posts/360067079431/comments/360014694792 But can we force this feasibl...