Ren Huorong He received the B.Sc. degree in testing & measuring technologies and instrumentation, M.Sc. degree in Electromagnetic Field and Microwave Technology, and Ph.D. degree in Circuit and System from Xidian University, China, in 1994, 1999, and 2004, respectively. Currently, he is an Associate Professor, doctoral supervisor, with the School of Electro-Mechanical Engineering, Xidian University. His research interests include data mining, anomaly detection, automatic testing technology, software-based measurement systems, computer vision, pattern recognition, face recognition, and bio-security.