Steven Edwards
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Recent activity by Steven Edwards-
Hi Zahra. What exactly is the error that is raised when you try and add the feasibility cut?
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Hi Johan, Apologies for the delay. It's an interesting idea. Do you mean like an automated tool for advanced user-scaling? If so, I have been playing around with an idea that could be useful for th...
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Hi Vadim, I had a quick look and I don't believe there is a way to remove the z variables completely (I might be wrong). Given the equality constraints in solver.addConstr(z[time_interval + 1] =...
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Hi Vadim, Thanks for the clarification. Yes, it should be possible to express the model just in terms of the x and y variables. Well really, you only need the first of the x variables, x[0]. From x...
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Hi Vadim, Glad to hear you resolved the issue :-). It isn't clear to me what you mean by "define z to be a dictionary and not a variable, Gurobi tells me the model is infeasible". I would encourage...
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Official comment Hi Vadim, Thanks for reaching out. I tried running that code you sent through and I get a feasible solution, although slightly different from the one you mention; mine has X=3. It is not clear to m...
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Hi Sean, Thanks for reaching out. That is quite peculiar. I notice that you are using 9.1.1 and also that a Compute Server Worker is involved. Can you first try upgrading to 9.1.2 and seeing whethe...
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Apologies, the typesetting was confused. That line should be, print(m.Params.MIPGap)
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Hi Deanna, This really is strange. Although it appears you are setting the MIPGap parameter with m.setParam('MIPGap', 0), the log file suggests that this update is not coming through. Gwyneth, was ...