在传统上,在通信网络中评价节点重要程度的方法一般是基于网络中可替换路由数目。这种法发的缺陷在于当网络被分割时,评价系统就无法发挥作用。所以,针对这个情况,清华大学的研究者提出一种利用网络性能梯度的变化评价通信网络中节点重要性的方法。这种方法能够比较准确的反应节点对网络性能的影响,并且弥补前人的不足。 Traditionally, the method of evaluating node importance in a communications network has generally been based on the number of alternative routes in the network. The disadvantage of this method is that the evaluation system can not function when the network is segmented. Therefore, in response to this situation, researchers at Tsinghua University proposed a method to evaluate the importance of nodes in communication networks by using changes in network performance gradients. This method can more accurately reflect the impact of nodes on the network performance, and make up for the deficiencies of the predecessors.