Dong Yuan, associate professor at Beijing University of Posts and Telecommunications, China, also a senior research consultant at the France Telecorn Research & Development Beijing in multimedia indexing research. He received his Ph.D. degree in Shanghai Jiao Tong University and worked as a postdoctoral research staff at the Engineering Department, Cambridge University, UK. He is now working on European speech recognition project-CORtEX. His cunent research interests include senntic video indexing, video copy detection, and multimedia content search. Email: yuandong@bupt.edu.cn Zhang Jiwei postgraduate student from Pattern Recognition Lab, Beijng University of Posts and Telecornunications, China. His current research interests include visual concept detection and sports categorization. Email: buptjiwei@gmail.com Zhao Nan, postgraduate student from Pattern Recognition Lab, Beijing University of Posts and Telecorrnunications, China. Her current research inter- ests include visual concept detection and sports categorization. Ernail: zhao.nan07@gmail.com Chang Xiaofu, researcher of Multimedia Analysis and Retrieval, France Telecom Research & Development-Beijing, China. H/s research interests include image/video search, object recognition, and data rrming. Email: xiaofu.chang@orange.com Liu Wei, researcher of Multimedia Analysis andRetrieval, France Telecom Research & Development-Beijing, China. His current research interests include video and image copy detection, and face detection. Email: wei.liu@omnge.com