Sergio Escalera obtained the P.h.D. degree on Multi-class visual categorization systems at Computer Vision Center, UAB. He obtained the 2008 best Thesis award on Computer Science at Universitat Autònoma de Barcelona. He leads the Human Pose Recovery and Behavior Analysis Group. He is a lecturer of the Department of Applied Mathematics and Analysis, Universitat de Barcelona. He is a partial time professor at Universitat Oberta de Catalunya. He is a member of the Perceptual Computing Group and a consolidated research group of Catalonia. He is also a member of the Computer Vision Center at Campus UAB and International Fundation of Research & Analysis. He is Editor-in-Chief of American Journal of Intelligent Systems. He is advisor of ChaLearn Challenges in Machine Learning. He is an active member of the Cluster de Salud Mental de Cataluña. He is also member of the AERFAI Spanish Association on Pattern Recognition and ACIA Catalan Association of Artificial Intelligence. His research interests include, between others, statistical pattern recognition, visual object recognition, and HCI systems, with special interest in human pose recovery and behavior analysis.