
Sophie Demassey
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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...
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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...
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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.
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Sophie Demassey created a post,
non LP-optimal heuristic integer solution at CB_MIPSOL
AnsweredHi,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...
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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...
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Sophie Demassey created a post,
adjust ObjBound with CbcSetSolution
AnsweredHi, 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...