He received the Ph.D. degree in Informatics from the University of Edinburgh in 2005. Prior to joining the Center for Computer Games Research, ITU, in 2007, he was a postdoctoral researcher at the Mærsk Mc-Kinney Møller Institute, University of Southern Denmark. His research interests include user modeling, neuro-evolution, computational intelligence in computer games, machine learning, cognitive modeling and affective computing. He has published over 100 journal and international conference papers in the aforementioned fields. He is an Associate Editor of the IEEE Transactions on Affective Computing and the IEEE Transactions on Computational Intelligence and AI in Games, and the chair of the IEEE CIS Task Force on Player Satisfaction Modeling.