Abstract:

This paper chooses part V type users under the label of entertainment in Sina microblog as the research object, to study the social network formed by such exchange of information between users. Through the analysis of several parameters such as network density, point centrality, closeness centrality, betweenness centrality and cohesive subgroups, it finds that due to the particularity of occupation and to maintain contacts as well as a good image in public, entertainment stars will interact with each other in microblog. But microblog is most used for self propaganda, so frequent interaction is not enough and communication is relatively scarce. Because of bigger fame, more partners and involving multiple domains, some stars stay in a core position in the network and play a key role in the process of information release and transfer.

Key words: Sina Micro-blog, 　Social network analysis, 　Network structure