Evangelos Stellatos is a Ph.D. Candidate in the Department of Informatics and Computer Engineering of the University of West Attica and holds a Master’s degree in Information Systems and Programming from the Open University of Greece. He graduated in Physics at the Aristotle University of Thessaloniki and since 1994 he has a rich teaching experience at various levels of education. During the last decade he works as an instructor of Computer Science in Colleges running foreign University Programs. He has been involved in the application of web mining techniques in news portal usage data. The topic of his Ph.D. thesis is “Detection, Analysis and Response on Affective States of Learners in an Intelligent and Adaptive Web-based Tutorial System”.