Nicolas Zerega
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Activity overview
Latest activity by Nicolas Zerega-
Nicolas Zerega commented,
I'm still wondering about this. As of now I've been able to keep the updated incumbent outside gurobi and then do the analysis with it. But would like to check why it is being cut and not accepted ...
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Nicolas Zerega created a post,
Do lazy constraints always cut integer solutions?
AnsweredDear all, I'm currently trying to test some optimality cuts via callbacks as lazy using python. The issue I'm encountering is that the incumbent doesn't update even if the current solution doesn't ...
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Nicolas Zerega commented,
Dear Marika: I understand now! I thought that having the cbSetSolution() at MIPSOL and then calling cbUseSolution() at MIPNODE would use the stored solution. Thank you very much for the clarification!
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Nicolas Zerega created a post,
About cbSetSolution() and cbUseSolution()
AnsweredDear all, While using Python, I'm encountering a "weird" behaviour. In my code, everytime a MIP solution is found (MIPSOL) I check whether it is feasible. In case it isn't I can, heuristically, mak...
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Nicolas Zerega created a post,
Get the extreme ray from infeasible primal
Awaiting user inputDear all, I'm currently solving a continuous model using the dual-simplex method with Python in order to obtain cuts that then have to be added to another MIP. This model can be optimal or infeasib...