Thomas Leveringhaus
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Votes on activity by Thomas Leveringhaus-
Hi Riley, thank you very much for your answer - your suggestion is an interesting "modeling trick" to me. It also gave me another idea to reduce the number of constraints. What do you think about t...
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Hi Jaromił, I see the obvious tradeoff between reducing the model size and not getting information from lazy bounds or constraints. FYI:I have huge sets of constraints to prevent islanding in an Op...
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Hi whwhwh55,besides the official gurobi articels I don't have additional guidance: Lazy constraints:https://support.gurobi.com/hc/en-us/articles/360013197972https://www.gurobi.com/documentation/10....
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Reading this topic, it came to my mind that lazy constraints or the partition heuristic might help address the problem?
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Hi Riley, thank you very much for your detailed answer! Your explanations opened my eyes to further details and interesting possibilities! I like precision a lot so I would like to thank you for cl...
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Hi Jaromił Najman, thank you very much for your answer, which is still helpfull for me. As far as I know, there is no way to control which variables survive the presolve process, so I can't predifi...
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Dear Jaromił, thank you very much for your replies. The background of my question regarding PreQLinearize is the following:I have to solve a MI-QCQP. So I have my variable vector x consisting of bi...
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Hi Matthias, thanks for your detailed reply. It would really be nice, if you would make this feature available in die MATLAB API in some future days ... With your advices I was able to implemen...
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Hi Matthias, thanks for your reply. I am using an sequential optimization approach, in which I solve an approximate MI-QCQP with Gurobi in each sequential step.So I use the integer values from the ...
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Hi Sonja, Thank you very much for your answer. It will take me some time to evaluate all the options, but now I know that I can move in that direction. Best regards Thomas