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Based on the research on Vehicle Routing Problems (VRP), vehicle scheduling and operating work can be more rational, which consequently reduces the logistical cost on the condition of meeting the timeliness requirement of emergency logistics. In this paper, we give an analysis of the characteristics of VRP in emergency logistics. According to the practical situations of VRP, an improved genetic algorithm...
This article describes an exact method based on a Branch & Cut algorithm for the multi-region vehicle routing problem in large quantities by a heterogeneous fleet of vehicles. Test results on different problem instances are presented after have been solved by CPLEX.
Based on traditional vehicle routing problem, grain logistics vehicle routing problem with time windows and the characteristics of grain logistics are fully considered in this paper. A model for grain logistics VRPTM was established, where the aim is to complete the maximum tasks with minimum cost. A PSO algorithm is proposed to solve the grain logistics VRPTW, the comparative experiments were made...
Vehicle routing problem with time windows (VRPTW) is an NP-complete optimization problem. The objective of VRPTW is to use a fleet of vehicles with specific capacity to serve a number of customers with fixed demand and time window constraints. A hybrid ant colony system (DSACA-VRPTW) is proposed to solve this problem. Firstly, each antpsilas solution might be improved by dynamic sweep algorithm which...
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