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Ground transport

Problem name and type, featuresDifficulty
E‑1 Car rental: Transport problem ***
data preprocessing, set operations, sqrt and ^2, if-then-elif
E‑2 Choosing the mode of transport: Minimum cost flow **
formulation with extra nodes for modes of transport; encoding of arcs, finalize, union of sets, nodes labeled with strings
E‑3 Depot location: Facility location problem ***
modeling flows as fractions, definition of model cuts
E‑4 Heating oil delivery: Vehicle routing problem (VRP) ****
elimination of inadmissible subtours, cuts; selection with `|', definition of model cuts
E‑5 Combining different modes of transport ***
modeling implications, weak and strong formulation of bounding constraints; triple indices
E‑6 Fleet planning for vans ***
maxlist, minlist, max, min

Further explanation of this example: 'Applications of optimization with Xpress-MP', Chapter 10: Ground transport[download all files]

Source Files

Data Files


! Data file for `e6vanrent.mos'

REQ: [430 410 440 390 425 450]

COST: [1700 2200 2600]

NINIT: 200

NAMES: ["Jan" "Feb" "Mar" "Apr" "May" "Jun"]

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