Maura Nurinda
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Maura Nurindaさんの最近のアクティビティ-
Maura Nurindaさんが投稿を作成しました:
Arrival Time VRPTW Need Help
回答済みHi I'm am working on my undergraduate thesis on multi period VRP with time windows in collection pickup scheduling and routing. My code work well unless the decision variable start time of pickup i...
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Maura Nurindaさんが投稿を作成しました:
Multi-period VRP Inventory stuck
回答済みHi Gurobi Team, I am working on my undergraduate thesis on multi period VRP in collection scheduling and routing. The inventory will be the fundamental point to trigger the multiperiod method. I wa...
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Maura Nurindaさんがコメントを作成しました:
Ah i see, i think that's the error comes from. So I have set of n indexed with j. The length is 6, with 0 is depot and 1-5 is the node that needs to be visited. Since generally we use lots of 1-5 d...
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Maura Nurindaさんがコメントを作成しました:
Yes, it shows the schedule for that nodes and vehicle in specific timing period. If it's giving y[i,j,k] = 1, it means that vehicle i is visiting node j in period k. Hence, the variable 'e' shows t...
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Maura Nurindaさんがコメントを作成しました:
Hi Riley, noted. Thank you very much for your help on this, I can understand where the error within my code. After giving several revisions, the code looks like this. I also put several constraint ...
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Maura Nurindaさんがコメントを作成しました:
Hi Riley, If it's like that, so what's the '.X' define in the code? Also, the constraint that you created previously for decision variable "e" is not creating the boundaries that need to be fulfil...
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Maura Nurindaさんがコメントを作成しました:
Hi Riley, Thank you for your help, after changing the pickup-produce constraint as you suggested, the model is not infeasible anymore. But I still have this difficulty in the attribute e error. Co...
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Maura Nurindaさんがコメントを作成しました:
For giving more context, In the pickup-produce constraint, I would like to create a scenario where everytime the vehicles visit that node in specific time (node can only be visited once for all per...
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Maura Nurindaさんがコメントを作成しました:
Hi Riley, Thank you for the heads up! Yes you are right, I did some mistake while writing the inventory constraints. After giving revision of it, it still giving infeasible result and showing this ...
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Maura Nurindaさんが投稿を作成しました:
Mult-period VRP Inventory stuck in creating the syntax
進行中Hi Gurobi Team, I am working on my undergraduate thesis on multi period VRP in collection scheduling and routing. The inventory will be the fundamental point to trigger the multiperiod method. I wa...