Program Committee Nicola Guarino, Istituto di Scienze e Tecnologie della Cognizione - CNR, Trento, Italy Andreas Herzig, Institut de Recherche en Informatique de Toulouse-CNRS, France Ian Horrocks, University of Manchester, UK Anthony Hunter, University College London, UK Gabriele Kern-Isberner, Dortmund University, Germany Iluju Kiringa, University of Ottawa, Canada Jana Köhler, IBM Zurich Research Laboratory, Switzerland Manolis Koubarakis, Technical University of Crete, Greece Gerhard Lakemeyer, University of Technology (RWTH) Aachen, Germany Jérôme Lang, Institut de Recherche en Informatique de Toulouse-CNRS, France Yves Lespérance, York University, Canada Hector Levesque, University of Toronto, Canada Paolo Liberatore, University di Roma “La Sapienza,” Italy Vladimir Lifschitz, University of Texas at Austin, USA Fangzhen Lin, Hong Kong University of Science and Technology, Hong Kong Thomas Lukasiewicz, University di Roma “La Sapienza,” Italy David Makinson, Kings College London, UK Pierre Marquis, Centre de Recherche en Informatique de Lens and Université d’Artois, Lens, France Deborah McGuinness, Stanford University, USA Sheila A. McIlraith, University of Toronto, Canada John-Jules Meyer, Utrecht University, Netherlands Guy Mineau, University Laval, Canada Leora Morgenstern, IBM T. J. Watson Research Center, USA Erik Mueller, IBM T. J. Watson Research Center, USA Bernhard Nebel, University of Freiburg, Germany Ilkka Niemelä, Helsinki University of Technology, Finland Maurice Pagnucco, University of New South Wales, Australia Pavlos Peppas, University of Patras, Greece Ramón Pino-Pérez, University de Los Andes, Venezuela Eyal Amir, University of Illinois, Urbana-Champaign, USA Bill Andersen, Ontology Works, USA Grigoris Antoniou, Crete University and FORTH-ICS, Greece Franz Baader, Dresden University of Technology, Germany Philippe Balbiani, Institut de Recherche en Informatique de Toulouse-CNRS, France Chitta Baral, Arizona State University, USA Brandon Bennett, University of Leeds, UK Alexander Borgida, Rutgers University, USA Ronen Brafman, Ben-Gurion University, Israel Gerhard Brewka, University of Leipzig, Germany Marco Cadoli, University di Roma “La Sapienza,” Italy Diego Calvanese, Free University of Bozen-Bolzano, Italy Marie-Odile Cordier, University Rennes 1, IRISA, France Ernest Davis, New York University, USA John Debenham, University of Technology, Sydney, Australia Giuseppe De Giacomo, “La Sapienza,” Rome, Italy Jon Doyle, North Carolina State University, USA Didier Dubois, Institut de Recherche en Informatique de Toulouse-CNRS, France Thomas Eiter, Vienna University of Technology, Austria Peter Eklund, University of Wollongong, Australia Thomas Ellman, Vassar College, USA Dieter Fensel, National University of Ireland and Innsbruck University, Austria Richard Fikes, Stanford University, USA Tim Finin, University of Maryland, Baltimore County, USA Enrico Franconi, Free University of Bozen-Bolzano, Italy Antony Galton, University of Exeter, UK Aldo Gangemi, Istituto di Scienze e Tecnologie della Cognizione - CNR Roma, Italy Héctor Geffner, University of Pompeu Fabra, Spain Enrico Giunchiglia, University di Genova, Italy Lluis Godo, Institut d’Investigació en Intelligència Artificial-CSIC Bellaterra, Spain xi Eyke Hullermeier Giovambattista Ianni Tomi Janhunen Lars Karlsson Alankar Karol Shakil Khan Sebastian Konieczny Jonas Kvarnström Maurizio Lenzerini Witold Lukaszewicz Toni Mancini Marco Maratea Erick Martinez Claudio Masolo Cynthia Matuszek Yves Moinard Danile Nardi Massimo Narizzano Alexander Nittka Angelo Oddi Domenico Pisanelli Quiniou René Riccardo Rosati Mohamad Sahade Richard Salay Steven Shapiro Viorica Sofronie Mikhail Soutchanski Borgo Stefano Sergio Tessaris Daniele Theseider Hans Tompits Gianluca Torta Robert Trypuz Mike Uschold Carlos Uzcaregui Stefan Wölfl Stefan Woltran Fiora Pirri, University di Roma “La Sapienza,” Italy Dimitris Plexousakis, University of Crete, Greece David Poole, University of British Columbia, Canada Alan Rector, University of Manchester, UK Marie Christine Rousset, University Paris-Sud, France Alessandro Saffiotti, Orebro University, Sweden Erik Sandewall, Linköping University, Sweden Bart Selman, Cornell University, USA Murray Shanahan, Imperial College, UK Stuart C. Shapiro, University of Buffalo, USA Helena Sofia-Pinto, IST de Lisboa, Portugal Liz Sonenberg, University of Melbourne, Australia Rudi Studer, University of Karlsruhe, Germany Andrzej Szalas, Linköping University, Sweden Michael Thielscher, Dresden University of Technology, Germany Rich Thomason, University of Michigan, USA Pietro Torasso, University of Torino, Italy Mirek Truszczynski, University of Kentucky, USA Laure Vieu, Institut de Recherche en Informatique de Toulouse-CNRS Toulouse, France Toby Walsh, National ICT and University of New South Wales, Australia Michael Witbrock, Cycorp Inc., USA Brian Williams, Massachusetts Institute of Technology, USA Mary-Anne Williams, University of Technology, Sydney, Australia Secondary Reviewers Vautier Alexandre Jose Alferes Alessandro Artale Jorge Baier Philippe Besnard Mathias Broxvall Carola Catenacci Yin Chen Sylvie Coste-Marquis Tom Duckett Phan Minh Dung Esra Erdem Roberta Ferrario Pablo Fillottrani Michael Fink Alberto Finzi Patrik Haslum Malte Helmert Eric Hsu xii