多数的现实网络中,节点的重要性不仅与节点在网络中的地位有关,还与网络中各节点的流量相关,仅分析静态网络的拓扑结构和属性特征,忽略网络流对节点重要性的影响,无法正确评价节点的重要性。针对现实网络的特征,构造一套具有二维特征的节点重要性评估指标体系,该指标体系综合考虑网络静态结构和动态流两方面的影响因素,并设计可调参数模拟两类不同维度因素的影响程度,通过某快递企业配送网络的实例,验证了指标和方法的有效性。
Node importance, in many real networks, is not only in connection with the node's status in network, but also related to the flow through it. But, in most previous studies, node importance was considered to be determined only by the topology structure and property of static network. In view of this deficiency, a set of node importance evaluation indices system with characteristics of two dimensions is established, in which two influential factors-static network and dynamic flow with tunable parameters are considered. The indices system and evaluation method are illustrated by a case of express enterprise's distribution network, with the results showing that our method can precisely evaluate node importance of most real networks with dynamic flow.