wujj@buaa.edu.cn Junjie Wu received Management Science his Ph.D. degree in and Engineering from Tsinghua University in 2008. He also holds a B.E. degree in Civil Engineering from the same university. He is currently an Associate professor in Information Systems Department, School of Economics and Management, Beihang University. His general area of research is data mining and complex networks, with a special interest in solving the problems raised from the emerging big-data applications. His research was supported by over 20 grants from NSFC, MOE, MOST and MIIT. He has published one monograph in Springer and over fifty papers in refereed conference proceedings and journals, such as KDD, SCIENCE, DMKD and TKDE. He is the recipient of the NSFC Excellent Young Scholars award (2013), the National Excellent Doctoral Dissertation award (2010), and the New Century Excellent Talents in University award (2011). He is a member of ACM, IEEE, INFORMS, AIS, and CCF. haoyan@uw.edu,Haoyan Sun is a doctoral student in Information Systems at the Michael G. Foster School of Business, University of WashingtonJ Her research interests include online trust, social networks, and electronic commerce. She has published in International Conference on Information Systems. ytan@uw.edu.Yong Tan is the Neal and Jan Dempsey Professor of Information Systems at the Michael G. Foster School of Business, University of Washington. He received his Ph.D. in Physics and Ph.D. in Business Administration, both from the University of Washington. He was a postdoctoral fellow at the University of Strathclyde and a visiting scientist at the Laboratoire de Physique Quantique, Universite Paul Sabatier. His research interests include electronic, mobile and social commerce, economics of information systems, social and economic networks, and software engineering. He has published in Management Science, Information Systems Research, Operations Research, Management Information Systems Quarterly, Journal of Management Information Systems, INFORMS Journ