Manuel J. Barranco is full Lecturer of Computer Science Department at the University of Jaén. His current research interests are Recommender Systems: Collaborative Filtering, Preference Modelling, etc. He has more than 10 papers in journals related to this research area, 4 book chapters and more than 30 contributions in International Conferences. He is and has been a researcher in 17 R&D projects, and he has been the main researcher in one of them.