中文摘要：

Muhamrnad Azam Zia, received the MS degree in computer science from University of Agriculture, Faisalabad, Pakistan and serving as a faculty member as well. Currently, he is a PhD candidate in the State Key Laboratory of Networkingand Switching Technology, Beijing University of Posts and Telecommunications. His research interests include social network and big data. Email： zia@bupt. edu.cn Zhongbao Zhang, received the PhD degree in Computer Science from Beijing University of Posts and Telecommunications, China, in 2014. He is an assistant professor in Beijing University of Posts and Telecommunications now. His major is Computer Science. His research interests include network virtualization, social network and big data. Email： zhongbao@bupt.edu.cn Ximing Li, received his undergraduate degree from Beijing University of Posts and Telecommunications. His major is Telecommunications Engineering with Management. His research interests include social network and network virtualization. Email： Alfie@bupt.edu.cn Haseeb Ahmad, received his Master degree in computer science from Virtual University of Pakistan. Currently, he is a PhD candidate in the State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications. His research interests include data mining and information security. Email： haseeb_ad@ bupt.edu.cn The corresponding author, email： susen@bupt.edu,cn Sen Su, received the PhD Degree in Computer Science from the University of Electronic Science and Technology, China, in 1998. He is currently a Professor at the Beijing University of Posts and Telecommunications. His research interests include cloud computing and big data. Email： susen@bupt. edu.cn