PT Chapter AU Pau Baiget Carles Fernandez Xavier Roca Jordi Gonzalez TI Automatic Learning of Conceptual Knowledge for the Interpretation of Human Behavior in Video Sequences BT 3rd Iberian Conference on Pattern Recognition and Image Analysis (IbPRIA 2007), J. Marti et al. (Eds.) LNCS 4477:507–514 PY 2007 ER