%A Lili RONG , Tianzhu GUO , Jiyong ZHANG , %T A new centrality measure based on sub-tree %0 Journal Article %D 2009 %J Front. Comput. Sci. %J Frontiers of Computer Science %@ 2095-2228 %R 10.1007/s11704-009-0046-y %P 356-360 %V 3 %N 3 %U {https://journal.hep.com.cn/fcs/EN/10.1007/s11704-009-0046-y %8 2009-09-05 %X How to evaluate the importance of nodes in networks and detect the centrality has become a vital problem in improving the efficiency of telecommunication and making a disease immunity strategy. We consider the mechanisms of real networks, and define a cost function to describe different hierarchies of networks to measure node importance. This method takes up a node’s regional influence as well as its global influence to evaluate its importance. The results of simulation prove that this method is proper to describe effectively and detect node discrepancies in a network.