Study of the VRP Based on the Fuzzy Demand

In the last few years, many researchers have studied the vehicle routing problem (VRP) in logistic studies, however, the majority of those analyses have gone on within the frame of a static restriction condition. Now there appears some literature studying the dynamic problem of the VRP, but only limited to the stochastic process. Despite the fact that the stochastic process is closed to the dynamic fact, in fact, to a great extent, the decision-making of uncertainly process is based on the fuzzy judgment. Thus, the paper uses the fuzzy theory to investigate the VRP with uncertain demand, and establish judgment principles which decide whether the vehicle continues to serve the next node or not after completing the first m nodes. Finally, an example is presented.