关键词: 货物快运, 鲁棒性, 和声搜索, 列车服务网络设计

Abstract:

As freight demand is prone to volatility during the planning period, robustness optimization model for freight express service network design was constructed in this paper. By comparing the robustness optimization model with the traditional basis model, and aiming at minimizing total transportation cost, the objective function has the implication of transportation services constraints, such as train transfers and train detaching as well as attaching plan, train marshaling plan, and delivery time, etc. The harmony search algorithm was used in this paper to solve the model with loop iteration to get better results. The results reveal that the robustness optimization model is well accustomed to the change in transportation demand, and it can also postpone freight delivery deadline while the transportation cost is reduced.

Key words: freight express, harmony search, train service network design, robustness