Research on Node Importance Evaluation of the Directed Weighted Complex Network

Aiming at the problem is neither objective nor thorough to simulate and analyze the real-world by the non-directed weighted network model, this paper not only defined a new evaluation metric for vital node importance called Directed Weighted Node Ranks(DWNR) possessing the local and entire link characteristics, but also designed a node importance evaluation model based on the directed weighted network. Initializing and ranging the nodes of networks by using the index of in-degree, the model can improve the constringency rate and identify precision. According to the simulation example, the feasibility and validity of network's node importance evaluation by this method are verified, and the results are not only effective and accurate, but also with high efficiency.