Jingyue Zhang
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Jingyue Zhangさんの最近のアクティビティ-
Jingyue Zhangさんがコメントを作成しました:
Hi Jaromil, Thanks for your advice!! I've tried to add all the constraints for a minor example with 20 data and the objective outputs are with no problem. However, when I use the whole data set, th...
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Jingyue Zhangさんがコメントを作成しました:
However, there are other constraints affecting the x[f] and z[f], should I add them to the minimal example and try?
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Jingyue Zhangさんがコメントを作成しました:
Sure, no problem, I'm sorry for the confusion. from gurobipy import *flights = ['1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','25','...
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Jingyue Zhangさんがコメントを作成しました:
Hi Jaromil, I've tried again and everytime the objective value is the same, whether I set objective function or not. No matter how objective funtion changes, the results are the same. flights = ['...
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Jingyue Zhangさんがコメントを作成しました:
Hi, I've tried to write the model in lp format, and here are some screenshots of the lp document: when I write the objective function as: m.setObjective(quicksum(e.sum(h,'*') * (rh[h]-lh[h]) for h...
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Jingyue Zhangさんがコメントを作成しました:
Hi Jonasz, the code regarding the objective function: for h in patype: for f in flights: ehf[h,f] = 0 for f in flights: cost1[f] = 0 cost2[f] = 0 patype, lh,...
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Jingyue Zhangさんがコメントを作成しました:
It seems like whether I set the objective or not, the output is the same.
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Jingyue Zhangさんがコメントを作成しました:
Hi Jonasz： Thanks for your in-time help！！
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Jingyue Zhangさんが投稿を作成しました:
set objective to get maximized results but Gurobi output Minimize
ユーザーの入力を待っています。Dear gurobi support portal： I've met a problem like this: my objective fuction is: m.setObjective(quicksum(e.sum(h,'*') * (rh[h]-lh[h]) for h in patype) - beta *(c1.sum('*'...
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Jingyue Zhangさんが投稿を作成しました:
Multi-scenario model Excel output
回答済みHi， I've noticed that Gurobi provides multi-scenario models and can solve them simultaneously. However, I met a problem when programming. If I'd like to write results for different scenarios into E...