He received the B.S. degree in Automation from Huazhong University of Science and Technology, and the M.S. degree in Industrial Engineering and the Ph.D. degree in Systems and Industrial Engineering from The University of Arizona, respectively. Prior to joining CityU, he worked as a Postdoctoral Research Associate with The Tetherless World Constellation in Department of Computer Science at Rensselaer Polytechnic Institute. He also worked at Pacific Northwest National Lab and Chinese Academy of Sciences in the summer of 2011 and 2010, respectively. His research interests include social informatics and social computing, complex networks, healthcare data analytics, semantic web, and web science.