Stefan Trausan-Matu, PhD is full professor and the head of the Colaborative Knowledge Construction Laboratory at the Computer Science Department of the University Politehnica of Bucharest, and senior researcher at the Institute of Artificial Intelligence of the Romanian Academy. He was a Fulbright post-doc at Drexel University, Philadelphia, USA and visiting professor at Universities of Nantes, Lyon, Toulouse, and Grenoble in France. Prof. Trausan-Matu was a pioneer in Romania in the research of Artificial Intelligence, Discourse Analysis in Chat Conversations, e-Learning, Object-Oriented Systems, and Expert Systems. Now, his research interests are at the confluence of Artificial Intelligence, Computational Linguistics, Discourse Analysis, e-Learning, Knowledge Construction, Social Web, Philosophy, Hermeneutics, and Music. He have introduced the Polyphonic Model and Analysis Methodology for discourse, collaboration, learning, and creativity, authored or edited 23 books, authored 44 book chapters and more than 450 peer-reviewed papers, was the director of many research projects funded by the European Union or Romania, and participated to the program or organizing committee of many international conferences.