Wenjia Shen

Hi Riley, I think you mean adding a new variable  u (with its lb=1, ub=1) and a new variable v, and rewriting SOC1 as: v + quicksum(aa[h, i] ** 2 for h in range(H)) + bb[i] ** 2 <= cc[i] ** 2v == 4...

Hi Riley, Thank you so much for your response. I now understand how to change the coefficients. However, if I want to change the value of “omega” in my SOC1, I can only do so by removing the entire...

Hi Riley, Got it. Thank you so much! Your guidance is exactly what I need to solve the problem. Best, Wenjia

Hi Riley, Due to my unfamiliarity with the default settings of the `model.addVar()` function, the equivalent model was previously deemed infeasible. After I adjusted the lower bounds of `bb` and `e...

Hi Riley, Actually, taking the second SOC as an example, the sum_h part is like this: Therefore, I should calculate a^2 + b^2 (as I've written in the code), instead of (a+b)^2. I apologize for my ...

Hi Riley, Please refer to this Google Drive link: https://drive.google.com/file/d/17RFhDFcoQp57Gf3S5F1R5EEGH6XEWtFa/view?usp=share_link It includes the code ("test.py") and data files. Thank you fo...

Hi David, Sorry I misunderstood your previous question. I meant that I have only used version 11.0, and in other models, the use of auxiliary variables has not caused infeasibility. For either the ...

Hi Riley, Thank you very much for your guidance! Using epigraphs is indeed useful. I am using Gurobi through Python with the gurobipy package. However, I still hope to know why Gurobi considers the...

Hi David,   I apologize for forgetting to mention this: the initial SOCP problem was also considered non-convex by Gurobi, and it automatically solved it as MIP: Optimize a model with 22 rows, 2412...

Hi David, My Gurobi was working fine before. Its version is: Gurobi Optimizer version 11.0.2 build v11.0.2rc0 (mac64[arm] - Darwin 23.5.0 23F79) Additionally, I need to correct a typo: in the first...