Workgroup
Prof. Guido Perboli
Upload a zip file including:
Presentation (Pdf or PowerPoint)
Accompanying document (Pdf or Word). The document must includes a brief description of the model and a discussion of the results.
Cplex project including the LP model and related data: export . Duration of the presentation: Max 10 minutes
After the presentation, each group has to modify the model according to a new requests.
G. Perboli – Workgroup
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Rules
Compliance of the uploaded material with the specifications: up to -10% in case of non compliance
Quality of the presentation (including professionality in the presentation):
30%
Answer to additional questions:
10%
Correctness of the models:
30%
Solution analysis and proposals for improvement:
30%
G. Perboli – Workgroup
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Evaluation
outFile=”MPVSBPP_SET1_IT200_ITV1_NT1_TS3_WT1_VT1_R EP1″;
File where to put the output m=200;
Number of orders o=34;
Total number of vehicles (as sum of the available vehicles over all the types)
p=3;
Number of time intervals
numVTypes=1;
Number of vehicle types
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Dat file
demand = […];
Quantity of each order
Depot_Cap = [30000, 30000, 30000]; Depot capacity in each time interval
Tarif = [30, 9, 21];
Cost for renting space in each time interval
VeicVolume = [100];
Avalilable volume (one for each vehicle type)
VeicCost = [1000];
Cost for vehicle renting (one for each vehicle type)
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Dat file
VeicType = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1];
Type of vehicle associated to each individual vehicle Elect_vehicle = [[700, 1000, 300], [700, 1000, 300], …];
For each individual vehicle and each time interval, it gives the cost for the delivery of one order (independently on its demand)
Fix the cost for the express delivery to a very high value Suggested: 10000
G. Perboli – Workgroup
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Dat file
Objective function
Components of the objective function
Warehouse costs Delivery costs Vehicle costs
Filling ratios od the vehicles
Average filling ratio per type
Usage of the vehicles types
How many types we really use?
Hoe many vehicles per type?
How many orders we assign to them?
What is the computational time? How many nodes we explore?
G. Perboli – Workgroup
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Possible axes of analysis