David Griol obtained his Ph.D. degree in Computer Science from the Technical University of València (Spain) in 2007. He has also a B.S. in Telecommunication Science from this University. He is currently professor at the Department of Computer Science in the Carlos III University of Madrid (Spain). He has participated in several European and Spanish projects related to natural language processing and dialogue systems. His research activities are mostly related to the development of statistical methodologies for the design of spoken dialogue systems. His research interests include dialogue management/optimization/simulation, corpus-based methodologies, user modeling, adaptation and evaluation of spoken dialogue systems and machine learning approaches. Before starting his Ph.D. study, he worked as a network engineer in Motorola. He is a member of ISCA (International Speech Communication Association), IEEE (Institute of Electrical and Electronics Engineers), and AEPIA (Spanish Association of Artificial Intelligence).