冷链物流网络的无标度特性研究

Research on Scale-free Characteristics of Cold Chain Logistics Network

论文对冷链物流网络进行无标度特性研究。首先,分析了冷链物流网络合作关系特性,发现新增节点在选择原有节点时并不完全按照原有节点的度,且冷链物流网络边不仅可增加还可以有删除;其次,对BA模型进行改进,在原有节点度作为择优指标的基础上引入新影响因素,构建相应择优概率,并依据客户中转遗失比例,按相应比例以反择优概率进行边的删除,建立了冷链物流网络模型;通过动力学分析冷链物流网络节点度分布规律,结论符合原始BA模型的幂率指数;最后,通过案例证明冷链物流网络模型符合无标度网络的分布特性。

The scale-free characteristic of cold-chain logistics network is studied in this paper. Firstly, cooperation relationship characteristic of the cold-chain logistics network is analyzed. It is found that the new node is not entirely in accordance with the degree of the original node, and the edge of cold-chainlogistics network can not only be increased？ but be deleted. Secondly,the BA model is the original node degree as the optimal index,the new influencing factor is introduced corresponding optimal probability. According to the proportion of lost customers in transit, the edge is deleted with the inverse optimal probability based on the corresponding proportion, and the cold-chain logistics network model is established. The distribution law of node degree of cold-chain logistics networkis analyzed by kinetic method,and the results are in agreement with the power law exponent of the original BA model. Finally, a case study shows that the cold chain logistics network model conforms to thedistribution of scale-free network.