The European Journal on Artificial Intelligence is a journal on Artificial Intelligence (AI) which has a close relationship with the European Association for Artificial Intelligence (EurAI). It covers the whole AI community: scientific institutions as well as commercial and industrial companies. The European Journal on Artificial Intelligence aims to enhance contacts and information exchange between AI researchers and developers, and to provide supranational information to those concerned with AI and advanced information processing. T he European Journal on Artificial Intelligence publishes refereed articles concerning scientific and technical AI procedures, provided they are of sufficient interest to a large readership of both scientific and practical background. In addition, it contains high-level background material, both at the technical level as well as the level of opinions, policies and news. The Editorial and Advisory Board is appointed by the Editor-in-Chief.