His research interests include machine learning, computer vision, surveillance video analysis and coding, and multimedia big data. He is the author or coauthor of over 110 technical articles in refereed journals and Confs. Dr. Tian is currently an Associate Editor of IEEE TRANSACTIONS ON MULTIMEDIA, and a Young Associate Editor of FRONTIERS OF COMPUTER SCIENCE, a member of the IEEE TCMC-TCSEM Joint Executive Committee in Asia (JECA). He has served as TPC member or OC member on several well-known conferences such as ACM KDD, ACM MM, IEEE ISCAS, IEEE MMSP, and will serve as the program co-chairs of IEEE ICME 2015 and IEEE BigMM 2015. He was the recipient of the Second Prize of National Science and Technology Progress Awards in 2010; the best performer in the TRECVID content-based copy detection (CCD) task (2010-2011); the top performer in the TRECVID retrospective surveillance event detection (SED) task (2009-2012); the winner of the WikipediaMM task in ImageCLEF 2008. He is a senior member of IEEE, a member of ACM, a member of CCF.