基于贡献矩阵的物流配送网络节点重要性评估方法∗

摘要

为了准确识别出物流配送网络中的关键节点，文中提出了基于贡献矩阵的加权网络节点重要度评估的新方法。该方法通过考虑节点的静态结构特征和动态流维度重要性，构建了一个二维重要性指标。据此，利用邻居节点的重要性贡献值表征节点的局部重要性，效率值表征节点的全局重要性，从而确定了最终的重要性评价指标。最后，对某快递企业的物流配送网络进行实证分析，结果验证了文中方法和指标的有效性。%In order to accurately identify the key nodes in the logistics distribution network, the paper proposes a new method for node importance evaluation of weighted networks based on the importance contribution matrix. By considering the static structure characteristics and the importance of the dynamic flow of the nodes,a two-dimension importance index is constructed. Accordingly,through the importance contributions of adjacent nodes characterizing the local importance of the nodes, and the efficiency representing the global importance of nodes, the paper determines the final importance evaluation index. Finally, the method is applied to the logistics distribution network of the express company. The empirical results verify the effectiveness of the index.