5Crandall D, Cosley D, Huttenlocher D, et al. Feedback effects between similarity and social influence in online communities/ /Proceedings of the 14th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining. New York, USA, 2008: 160-168.
6Moreno J L, Jennings H H. Who Shall Survive?: A New Approach to the Problem of Human Interrelations. Washington: Nervous and Mental Disease Publishing Coorperation , 1934.
7Scott J P. Social Network Analysis: A Handbook. 2nd Edition. London: SAGE Publications, 2000.
8Freeman L C. The Development of Social Network Analysis: A Study in the Sociology of Science. Vancouver: Empirical Press, 2004.
9Leskovec J, Horvitz E. Planetary-scale views on a large instant-messaging network/ /Proceedings of the 17th International Conference on World Wide Web. New York, USA, 2008: 915-924.
10Adamic L. Adar E. Friends and neighbors on the Web.Social Networks, 2003, 25(3): 211-230.
