Nicolas Zerega
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Nicolas Zeregaさんがコメントを作成しました:
Got it, I will try that Thank you very much!
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Nicolas Zeregaさんがコメントを作成しました:
Hey Jaromil, If I understood correctly. For the last best bound found there may or may not be violated \(C\) conditions when solving \(SP\). If there aren't any then I'm "lucky" and the best lower ...
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Nicolas Zeregaさんが投稿を作成しました:
How can I correctly retrieve/save the relaxed variables values associated with the best bound?
回答済みHello everyone, Gurobi 10.0.0 (win64) logging started Mon Nov 21 12:27:41 2022Set parameter LogFile to value "IHLP.txt"Gurobi Optimizer version 10.0.0 build v10.0.0rc2 (win64)CPU model: AMD Ryzen 7...
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Nicolas Zeregaさんがコメントを作成しました:
Since, you compute your \(SP\) , could you use this information to add a cut yourself through a callback? Exactly, that's how I'm adding these cuts. First I get the relaxed var. values. With thos...
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Nicolas Zeregaさんが投稿を作成しました:
Is there a way to tell gurobi to stay at root node until a certain condition is met?
回答済みI'm working on a MIP problem (minimization). Currently, I have an exponentially large family of constraints \(C\), which I separate dynamically by solving an auxiliary problem \(SP\) (for separatio...
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Nicolas Zeregaさんが投稿を作成しました:
Do lazy constraints cut fractional solutions?
回答済みHere's a log of my model. I'm just working with the root node (node limit = 1) and have the heuristics parameter set to 0 as well as every gurobi cut (hence the lack of integer solutions) For the s...
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Nicolas Zeregaさんがコメントを作成しました:
I solved it by just setting the parameter NodeLimit to 1 But I still have the question as to why gurobi explores +2 nodes even when I tell it to stop when the NODCNT != 0
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Nicolas Zeregaさんが投稿を作成しました:
Terminating optimization when leaving root node posts a different bestbound than the one in log.
ユーザーの入力を待っています。Python 3 + Gurobi 9.5 I'm currently doing lower bound analysis in the root node. Since I'm only interested in the root I terminate the optimization using callbacks: if where == GRB.Callback.MIP and...
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Nicolas Zeregaさんがコメントを作成しました:
Hi Jaromil, Thanks you very much for answering. I will try to play around with dual and primal bounds and see what happens. So, if I understand correctly, I shouldn't consider the "node depth" numb...
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Nicolas Zeregaさんが投稿を作成しました:
How does gurobi calculate the "Node Depth" number shown in logs?
回答済みHi everyone, as the title says, I'm curious as how does gurobi get that number. Since, to the best of my knowledge (and this post https://support.gurobi.com/hc/en-us/community/posts/360047974992-Ge...