I am an associate professor in the School of Computer Science & Engineering, Southeast University, China. I obtained Ph.D. (2007) in computer application technology from Southeast University. My current research interests are in online social network and big data, which include spammer detection in social network, the evolution of social community and social influence. My research interest also lies in multi-agent technology, especially in using agent technology to solve social network problems. I am the principal of two projects of national nature science foundation of China. I got the first class Science and Technology Progress Award of MoE in 2009. I have been publishing papers in conferences and journals such as International Conference on Communications (ICC), IEICE Transactions on Information and System, Journal on Wireless Communications and Networking, Wireless Communication and Mobile Computing.