关键词: 社会网络, 三元闭包, 幂率分布, 聚集系数, 平均路径长度

Abstract: This article introduces the social network models’evolution as well as the important role of triadic closure in the social network, in the social network new link has certain influence to the future link, in view of the fact that triadic closure has tremendous role in the process of evolution about social network model as well as the limitation of the scale-free networks itself, it proposes one kind of social networks model based on triangle evolving mechanism. Through the simulation test it can obtain that this network model obeys the power-law distribution, compared with BA it has stronger robustness, smaller clustering coefficient and bigger average path length.

Key words: social network, triadic closure, power-law distribution, clustering coefficient, average path length