Canqi Yao
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Canqi Yaoさんの最近のアクティビティ-
Canqi Yaoさんがコメントを作成しました:
Solved! Repalcing large-sized matrix with its sparse matrix can reduce the modeling time!!!
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Canqi Yaoさんが投稿を作成しました:
Too much time wasted in adding quadratic constraint for a quadratic minimization problem
回答済みHi, I came across an annoying problem while solving a quadratic minimization problem. Too much time (almost 2 mins for the size of 576*1*1 ) in adding socp_det constraint. What can be done to reduc...
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Canqi Yaoさんがコメントを作成しました:
Hi Eli, Thank you very much, it seems that I have fixed this issue. Best, Canqi
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Canqi Yaoさんがコメントを作成しました:
Hi Eli, I have revised my code according to what you said, however, there is a new error occurred. NameError: name 'EPI' is not defined My code is uploaded as the attached file. # Import Gurobi L...
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Canqi Yaoさんが投稿を作成しました:
Error occurred while defining a callback function in class
回答済みHi, When I implement Benders decomposition method with gurobipy, some bugs occur. This 1st - 4th pictures show 1) the whole codes, 2)code implementing optimization with user-defined cut (EPI, cal...
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Canqi Yaoさんがコメントを作成しました:
Hi Jaromił Apart from reducing time in callback function, can we decrease the number of calling callback function by choosing some nodes with callback function added? Best Canqi
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Canqi Yaoさんが投稿を作成しました:
Is there any method to reduce cpu time in callback function ?
回答済みHi I am trying to use Branch and cut method to solve a vehicle routing problem. When there is a relaxed continuous solution obtained, a specified condition will be checked and a user-defined cut w...
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Canqi Yaoさんが投稿を作成しました:
DLL load failed for gurobipy (Windows, calling python script from Matlab)
回答済みHi When I am trying to run this code ‘system('D:\anaconda\python.exe dualSP.py')’ in Matlab, the following error occurs. (P.S. Note that dualSP.py runs perfectly in Pycharm.) >> system('D:\anaco...
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Canqi Yaoさんがコメントを作成しました:
Hi Matthias Note that when i=0, j=0, and k=0, this constraint = 0 >= -t[0]+ T[0,0] + g[0] * r[0,0] + t[0] - M * (1 - x[0,0,0] which can be further simplified for T[0,0]=0 -g[0]*r[0,0]>= - M * (1 -...
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Canqi Yaoさんがコメントを作成しました:
As shown in the following figure, the 1st element of bineq should be 5000 in this case ( T[i,i]==0 for i in range(N) ). However, running the code gives me a wrong RHS value. # branch and cut us...