Heping Li Zhanyi Hu Yihong Wu Fuchao Wu MAPACo-Training: A Novel Online Learning Algorithm of Behavior Models. 472-481 2007 conf/accv/2007-1 ACCV (1) http://dx.doi.org/10.1007/978-3-540-76386-4_44 db/conf/accv/accv2007-1.html#LiHWW07