Jingyue Zhang

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...

However, there are other constraints affecting the x[f] and z[f], should I add them to the minimal example and try?

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','...

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 =  ['...

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...

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,...

It seems like whether I set the objective or not, the output is the same.

Hi Jonasz： Thanks for your in-time help！！  

Thanks！ The problem is solved!

Hi, Thanks for your advice!! I tried with the web license manager. the error occurs. Error code 10010: Model too large for size-limited license; visit https://www.gurobi.com/free-trial for a full l...