Thomas Hatzichristosholds a Diploma (Dipl.-Ing.) in Rural and Surveying Engineering, from National Technical University Athens (NTUA) and a Ph.D, in the area of Geographic Information Systems and Computational Intelligence,from the same University. He was affiliated to the Department of Geography, University of the Aegean (1998-2000). From September 2000 he belongs to the Research and Teaching Staff of the National Technical University of Athens. He has been involved in a number of national and EU projects and has experience in Geographic Information Systems and computational Intelligence, GIS applications in urban and regional planning, GIS and fuzzy systems and geography and spatial analysis. He is also a consultant,on Geoinformatics,in several private firms andpublic bodies.