Research on two-phase chain store distribution vehicle routing problem with soft time windows
带软时间窗的两阶段连锁门店配送车辆路径问题研究

According to chain enterprises distribution routing optmization decision making problem, this paper established a mathematic model of the problem by using the decomposition method for two phase analysis, and introduced a time window constraints. First, the method determined the optimal number and locations of suppliers and distribution centers by using minimum wrap-net method, then used TS to search the optimal routes from distribution centers to stores. The test example shows the validity this method of and practical value.