AAAI–97 / IAAI–97 Program Committees AAAI-97 Program Cochairs AAAI-97 Senior Program Committee Benjamin J. Kuipers, University of Texas at Austin Bonnie Webber, University of Pennsylvania Richard Belew, University of California, San Diego Gautam Biswas, Vanderbilt University Piero P. Bonissone, General Electric Corporate Research & Development Christopher M. Brown, University of Rochester Sandra Carberry, University of Delaware James Crawford, i2 Technologies Robert Engelmore, Stanford University Susan L. Epstein, Hunter College David W. Etherington, University of Oregon Richard Fikes, Stanford University Tim Finin, University of Maryland Baltimore County Ken Forbus, Northwestern University Stephen J. Hanson, Rutgers University Eric Horvitz, Microsoft Research Craig A. Knoblock, University of Southern California Kurt Konolige, SRI International Pat Langley, Daimler-Benz Research & Technology Center Steve Minton, University of Southern California Leora Morgenstern, IBM TJ Watson Research Center Karen L. Myers, SRI International David Poole, University of British Columbia Bruce Porter, University of Texas at Austin Yves Schabes, Mitsubishi Electric Research Laboratories Howard Shrobe, Massachusetts Institute of Technology Artificial Intelligence Laboratory Candy Sidner, Lotus Development Corporation Michael Wellman, University of Michigan AAAI-97 Associate Chair Ramesh Patil, University of Southern California / Information Sciences Institute IAAI-97 Conference Chair Ted Senator, National Association of Securities Dealers IAAI-97 Conference Cochair Bruce Buchanan, University of Pittsburgh Hall of Champions Chair Matthew L. Ginsberg, CIRL/University of Oregon Robot Building Laboratory Chair David Miller, KISS Institute for Practical Robotics Robot Competition Chair Ronald C. Arkin, Georgia Institute of Technology Student Abstract and Poster Chair Polly K. Pook, Massachusetts Institute of Technology AAAI-97 Program Committee Tutorial Cochairs Bart Selman, ATT Laboratories Brian C. Williams, NASA Ames Research Center Workshop Chair Raymond C. Mooney, University of Texas at Austin Doctoral Consortium Organizers Vibhu O. Mittal, University of Pittsburgh Loren G. Terveen, AT&T Research David W. Aha, Naval Research Laboratory Douglas E. Appelt, SRI International Ron Arkin, Georgia Institute of Technology Lars Asker, California Institute of Technology/JPL Fahiem Bacchus, University of Waterloo Chitta Baral, University of Texas at El Paso Hamid R. Berenji, IIS CORP/NASA Ames Research Center Pete Bonasso, Texas Robotics & Automation Center Craig Boutilier, University of British Columbia Liz Bradley, University of Colorado Marco Cadoli, Universitá di Roma "La Sapienza" Claire Cardie, Cornell University xxviii Rama Chellappa, University of Maryland Luca Chittaro, Universitá di Udine Dan Clancy, University of Texas Peter Clark, The Boeing Company Paul Cohen, University of Massachusetts Gregory Cooper, University of Pittsburgh Gary Cottrell, University of California, San Diego Bruce D'Ambrosio, Oregon State University Adnan Darwiche, American University of Beirut Ernie Davis, New York University Peter Dayan, Massachusetts Institute of Technology Keith Decker, University of Delaware Dennis DeCoste, Jet Propulsion Laboratory Barbara M. Di Eugenio, University of Pittsburgh Pedro Domingos, University of California, Irvine Richard Doyle, Jet Propulsion Laboratory Denise Draper, Rockwell Science Center Didier Dubois, IRIT, Universite Paul Sabatier Edmund Durfee, University of Michigan Tom Ellman, Rutgers University Francesc Esteva, IIIA-AI Research Institute, CSIC Brian Falkenhainer, Wilson Center Adam Farquhar, Stanford University George Ferguson, University of Rochester R. James Firby, University of Chicago Margaret Fleck, University of Iowa Eugene C. Freuder, University of New Hampshire Nir Friedman, University of California Hector Geffner, Universidad Simon Bolivar Jack Gelfand, Princeton University Yolanda Gil, USC/Information Sciences Institute Matthew L. Ginsberg, University of Oregon Attilio Giordana, University of Torino Janice Glasgow, Queen's University Ashok K. Goel, Georgia Institute of Technology Moises Goldszmidt, SRI International Jonathan Gratch, University of Southern California Adam Grove, NEC Researach Institute Larry Hall, University of South Florida Joe Halpern, Cornell University Inman Harvey, University of Sussex Caroline Hayes, University of Illinois Marti Hearst, Xerox Palo Alto Research Center James Hendler, University of Maryland Tad Hogg, Xerox Palo Alto Research Center Robert Holte, University of Ottawa John Hooker, Carnegie Mellon University John Horty, University of Maryland Adele Howe, Colorado State University Marcus J. Huber, Orincon Corporation Michael Huhns, University of South Carolina Wayne Iba, Institute for the Study of Learning & Expertise Mark Johnson, Brown University Randolph Jones, University of Michigan David Joslin, University of Oregon Subbarao Kambhampati, Arizona State University G. Neelakantan Kartha, i2 Technologies Michelle Kim, IBM T.J. Watson Research Center Hiroaki Kitano, Sony Computer Science Laboratory Daphne Koller, Stanford University Dave Kortenkamp, Metrica Inc Robotics & Automation Group Jana Kosecka, University of California, Berkeley Sarit Kraus, Bar Ilan University and University of Maryland Franz Kurfess, New Jersey Institute of Technology Robert Laddaga, Massachusetts Institute of Technology Artificial Intelligence Lab John Laird, University of Michigan Reza Langari, Texas A&M University Nancy Lehrer, ISX Corporation James Lester, North Carolina State University Alon Levy, AT&T Laboratories Henry Lieberman, Massachusetts Institute of Technology Vladimir Lifschitz, University of Texas at Austin Jim Little, University of British Columbia Karen E. Lochbaum, U S WEST Advanced Technologies Ramon Lopez de Mantaras, IIIA-AI Research Institute, CSIC Mitch Marcus, University of Pennsylvania James Mayfield, Johns Hopkins APL Kathleen F. McCoy, University of Delaware Donald P. McKay, Lockheed Martin Susan McRoy, University of Wisconsin-Milwaukee Melanie Mitchell, Santa Fe Institute Ray Mooney, University of Texas at Austin Mike Mozer, University of Colorado Robin R. Murphy, Colorado School of Mines Nicola Muscettola, NASA Ames Research Center Mark Musen, Stanford University School of Medicine Robert A. Nado, Price Waterhouse Technology Centre Dana Nau, University of Maryland P. Pandurang Nayak, NASA Ames Research Center Bernard Nebel, Albert-Ludwigs-Universitat Freiburg Peter Norvig, Junglee Corporation David G. Novick, Eurisco Yun Peng, University of Maryland Baltimore County Mark Alan Peot, Knowledge Industries Fernando Pereira, AT&T Laboratories-Research Greg Provan, Rockwell Science Center Rajesh P.N. Rao, University of Rochester Jeff Rickel, USC/Information Sciences Institute Nicolas Rouqette, Jet Propulsion Laboratory Enrique H. Ruspini, SRI International Tuomas Sandholm, Washington University Ethan Scarl, Boeing Defense and Space Jonathan Schaeffer, University of Alberta Torsten Schaub, LERIA, Universite d'Angers Donia R. Scott, University of Brighton Bart Selman, AT&T xxix Steven Shafer, Microsoft Corporation Murray Shanahan, Queen Mary and Westfield College Reid Simmons, Carnegie Mellon University Wolfgang Slany, Technische Universitaet Wien David E. Smith, Rockwell Science Center Stephen F. Smith, Carnegie Mellon University Edward Stabler, University of California, Los Angeles Thomas F. Stahovich, Carnegie Mellon University Ron Sun, University of Alabama Richard S. Sutton, University of Massachusetts Bill Swartout, USC/Information Sciences Institute Katia Sycara, Carnegie Mellon University Prasad Tadepalli, Oregon State University Moshe Tennenholtz, Technion-Israel Institute of Technology Loren Terveen, AT&T Laboratories Gerald Tesauro, IBM TJ Watson Research Center Daniele Theseider Dupré, Universita' di Torino William B. Thompson, University of Utah Sebastian Thrun, Carnegie Mellon University Geoff Towell, Siemens Corporate Research John K. Tsotsos, University of Toronto Jeff Van Baalen, University of Wyoming Peter van Beek, University of Alberta Richard Waldinger, SRI International Richard Washington, CRIN-CNRS&INRIA-Lorraine Takashi Washio, Osaka University Darrell Whitley, Colorado State University Mary-Anne Williams, University of Newcastle Kent Wittenburg, GTE Laboratories Michael Wolverton, SRI International Yang Xiang, University of Regina Qiang Yang, Simon Fraser University David Yarowsky, Johns Hopkins University Nevin Lianwen Zhang, Hong Kong University of Science & Technology Feng Zhao, Ohio State University Ingrid Zukerman, Monash University Monte Zweben, PeopleSoft Jan M. Zytkow, Wichita State University Yannis Dimopoulos Roger Evans Helene Fargier Pere Garcia Meirav Hadad Tony Hartley Andreas Herzig Laurie Ihrig Phillip Johnson-Laird Andreas Junghanns Jana Koehler Philippe Laborie Eric Lambrecht Jerome Lang Xiaomin Li Sean Luke Joel Martin Pedro Meseguer Stefano Monti Hiroshi Motoda Aske Plaat David Pynadath Jochen Renz Marie-Christine Rousset Christer Samuelsson Orna Schechter Rina Schwartz Onn Shehory John Slaney Biplav Srivastava Reinhard Stolle Tomas Uribe Dan Weld Geoff Zweig IAAI-97 Program Committee Bruce Buchanan, University of Pittsburgh Steve Cross, Carnegie Mellon University Philip Klahr, Inference Corporation Alain Rappaport, Neuron Data Charles Rosenberg, IS Robotics Ted Senator, National Association of Securities Dealers Howard E. Shrobe, Massachusetts Institute of Technology Reid Smith, Schlumberger Cambridge Research Marilyn Walker, ATT Laboratories AAAI-97 Auxiliary Reviewers John Mark Agosta Constantin Aliferis Sean Argamon (Engelson) Christopher Bailey-Kellogg William Bares Philippe Besnard Nikolaj Bjorner Yngvi Bjornsson Jack Breese Charles Callaway John Crossley Esther David xxx