Sajjad Hedayati
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Sajjad Hedayatiさんの最近のアクティビティ-
Sajjad Hedayatiさんがコメントを作成しました:
Hi, Thank you for your suggestion. Although your solution seems to work, I couldn't have applied it to my model. I wonder if there is any solution to get those extreme points in which there are som...
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Sajjad Hedayatiさんが投稿を作成しました:
Calling Shadow Prices Under Degeneracy
進行中Dear Gurobi community I wonder if there is any possibility that we can get degeneracy information of a degenerate optimal basic feasible solution. In fact, I need to drop those constraints that are...
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Sajjad Hedayatiさんがコメントを作成しました:
I think that I have received the answer. Thank you, Mario!
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Sajjad Hedayatiさんが投稿を作成しました:
Issues with adding valid inequalities
回答済みHi everyone I have a full integer model with both binary and positive integer variables. I would like to extract the relaxed LP solutions and apply some valid inequality. I already know that MIPNOD...
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Sajjad Hedayatiさんがコメントを作成しました:
Thanks, Mario!
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Sajjad Hedayatiさんがコメントを作成しました:
I think that I got my answer regarding the B&B. Thank you! What if we have a heuristic and we want to use its solution for our next optimization step by Gurobi? Like two-stage programming strategie...
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Sajjad Hedayatiさんがコメントを作成しました:
Thank you again for your explanation. Now, I wonder if you could help me with the following strategy: - Imagine we get a lower bound and an infeasible solution that is integral obtained from an ind...
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Sajjad Hedayatiさんがコメントを作成しました:
Hi Mario, Thank you for the information. According to your answer, two questions are possible: 1- If I implement my own branch-and-bound algorithm via gurobipy, I will need to use the LP model and ...
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Sajjad Hedayatiさんが投稿を作成しました:
Applying LR to the B&B for MIPs
回答済みHi everyone I am trying to apply Lagrangian Relaxation to Branch-and-Bound to solve a MIP problem. How can I use LR during branching? I know that I have to use callbacks but I do not know how I can...