Yanyan Liang received M.S. and Ph.D. degrees in the Faculty of Information Technology, Macau University of Science and Technology, Taipa, Macau, China, in 2006 and 2009, respectively. He is an associate professor with the Faculty of Information Technology, Macau University of Science and Technology, Taipa, Macau (e-mail:yyliang@must.edu.mo). His research interests include machine learning, deep learning, image processing, computer vision, and artificial intelligence.