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Stochastic programming model for flow uncertainty and its effects on hub-and-spoke network
Author(s): 
Pages: 197-205
Year: Issue:  2
Journal: Journal of Central China Normal University(Natural Sciences)

Keyword:  logisticshub-and-spoke networkuncertainty of demandcapacity designmulti-attribute evaluationstochastic programming;
Abstract: 轴辐式网络通过节点之间的相互协作产生运输规模效应,从而降低物流成本.轴辐式网络节点之间货流的不确定性,使得对节点能力的确定具有风险,并影响节点对网络的贡献的分析.首先,考虑货流不确定性的特点,运用随机规划方法确定辐节点的吞吐能力,为了确定轴辐式网络的结构和枢纽节点的吞吐能力,在辐节点吞吐能力的基础上建立轴辐式网络设计的混合整数随机规划模型.然后,从节点流量规模、节点资源利用率、支线与干线对流平衡等角度对节点划分等级,建立多属性效用函数评估节点对网络贡献,并提出节点贡献率评价指标.最后,基于节点贡献率,分析了网络运营中存在的问题,探讨了网络调整策略,并通过算例验证了调整策略对提高网络资源利用率的有效性.
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