Lin Lin
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Lin Linさんの最近のアクティビティ-
Lin Linさんがコメントを作成しました:
Hi Jaromił, I believe I implemented my model as you described in the first case, and all my questions are resolved! Thank you so much for all the help! Best regards, Lin
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Lin Linさんがコメントを作成しました:
Hi Jaromił, Thanks again for the answer! So here is the quadratic constraint in my model (with a linear objective): where A is the linear terms in that constraint, Cij is a known parameter that is...
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Lin Linさんがコメントを作成しました:
Hi Jaromił, Thanks for the extensive answer. Please allow me for a few more questions: Yes, this is the standard technique to deal with convex quadratic term when the whole model is determined to ...
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Lin Linさんがコメントを作成しました:
Hi Jaromił, Thank you so much for the informative response! If you allow, I have 2 follow-up questions based on your answers: 1. I have two x*y terms in the quadratic constraint, one is linearizabl...
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Lin Linさんが投稿を作成しました:
How does Gurobi 10.0.0 handle quadratic constraints?
回答済みI have a quadratic constraint in my model (with linear objective) and while I solve it in Gurobi, I didn't see the error message GRB_ERROR_Q_NOT_PSD. Given that, I got questions: 1. Since I didn't'...
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Lin Linさんがコメントを作成しました:
Hi Jaromił, Thank you so much for the helpful answer! Yes, I believe the feasible points exist and I've seen feasible solutions have been found. I do have one more question related to this: there...
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Lin Linさんが投稿を作成しました:
Heuristic not used
回答済みHi there, I'm using Gurobi to solve a very large problem that may take a few days. However, I observed that in the first 48 hours no heuristic was used, and no feasible solution had been founded ...
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Lin Linさんが投稿を作成しました:
Dealing with repeatedly read in constraints
回答済みHi there! I'm trying to solve a large location-allocation problem by first find the location variable values with some metaheuristic and then use Gurobi to find allocation variable values. Thus it ...