atefeh Behzadi

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atefeh Behzadiさんの最近のアクティビティ

  • atefeh Behzadiさんが投稿を作成しました:

    Getting Stuck in gap in MIP optimization model

    回答済み
    1. コミュニティ
    2. Algorithms

    I have developed an MIP optimization model for designing a district heating network. The objective of the optimization is to minimize the cost associated with the piping infrastructure. In the code...

    • atefeh Behzadi
    • 2フォロワー
    • 1件のコメント
    • 0 件の投票

  • atefeh Behzadiさんがコメントを作成しました:

    1. コミュニティ
    2. Algorithms
    3. Problem in optimization of MIP model

    Thanks to your recommendation, I upgraded my Gurobi from version 10 to 11.0.0. However, I have issues with the updated version, and it is not functioning as expected, even for problems that worked ...

  • atefeh Behzadiさんがコメントを作成しました:

    1. コミュニティ
    2. Algorithms
    3. Problem in optimization of MIP model

    fix_num = 4 * 1000  # numeratorfix_den = 3.6 * 3.14 * ro * V_max  # denominatorfor edge in df_edges.index:     model.addConstr(fix_den * D_edge_2[edge] * D_edge_2[edge] == fix_num * mass_edge[edge])

  • atefeh Behzadiさんがコメントを作成しました:

    1. コミュニティ
    2. Algorithms
    3. Problem in optimization of MIP model

    Thank you very much for your assistance; I have implemented all of your suggestions. However, I have a challenge in finding the Incumbent of the objective function. I believe this issue may be a...

  • atefeh Behzadiさんが投稿を作成しました:

    Problem in optimization of MIP model

    回答済み
    1. コミュニティ
    2. Algorithms

    Hello, I have an optimization model in Gurobi optimization in python which has two binary variables and one non convex constraint, I have a problem with finding the initial point. I think The BestB...

    • atefeh Behzadi
    • 3フォロワー
    • 9件のコメント
    • 0 件の投票

  • atefeh Behzadiさんがコメントを作成しました:

    1. コミュニティ
    2. Modeling
    3. Modeling Issue

    Thank you. I have a question about the method that Gurobi employs to find the best objective function. In many of my optimization models, the Best Bound of Objective Bounds is not feasible, especia...

  • atefeh Behzadiさんが投稿を作成しました:

    Modeling Issue

    回答済み
    1. コミュニティ
    2. Modeling

    I have developed an optimization model for the design of district heating network pipes. My objective is to identify the presence of each pipe in the network and finalize the network design. To ach...

    • atefeh Behzadi
    • 2フォロワー
    • 3件のコメント
    • 0 件の投票

  • atefeh Behzadiさんがコメントを作成しました:

    1. コミュニティ
    2. Programming
    3. Quadratic constraint

    Yes, i guess it too. Thanks a lot. 

  • atefeh Behzadiさんがコメントを作成しました:

    1. コミュニティ
    2. Programming
    3. Quadratic constraint

    Yes, but it is very weird because when i want to limit some variables it takes more time. in this special problem when i set this heuristics solver parameter model.setParam(GRB.Param.Heuristics, 0....

  • atefeh Behzadiさんがコメントを作成しました:

    1. コミュニティ
    2. Programming
    3. Quadratic constraint

    I tried it but it doesn't work (it's same as before). i have a constraint such as:  model.addConstr(aux1[edge] == fix * mass_edge[edge] * Bp[edge])model.addConstr(D_edge[edge] * D_edge[edge] >= (au...