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

  • 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...

  • 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 ...

  • 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...

  • 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'...

  • 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...

  • 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 ...

  • 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 ...