Wednesday, October 25, 2006 8:30 - 9:00 Registration 9:00 - 9:15 Opening session 9:15 - 10:45 Tutorial Session 1 (Chair: Denis Bouyssou) Computer Science and Decision Making Fred Roberts, DIMACS 10:45 - 11:00 Coffee break 11:00 - 12:30 Tutorial Session 2 (Chair: Denis Bouyssou) Behavioral Social Choice: Probabilistic Models, Statistical Inference, and Application Mike Regenwetter 12:30 - 2:30 Lunch 2:30 - 4:00 Tutorial Session 3 (Chair: Fred Roberts) Using Mathematics to Explain Surprises in Voting Theory Donald Saari 4:00 - 4:30 Coffee break 4:30 - 6:00 Tutorial Session 3 (Chair: Fred Roberts) Voting Systems That Combine Approval and Preference Steve Brams 6:00 - 7:30 Welcome drink Thursday, October 26, 2006 8:30 - 10:00 Tutorial Session 5 (Chair: Stefan Pickl) A Conjoint Measurement View on Fuzzy Integrals Denis Bouyssou, Thierry Marchant, Marc Pirlot 10:00 - 10:15 Coffee break 10:15 - 12:30 Session 1 (Chair: Donald Saari) Removal Independence for ß-closed Systems of Sets Gary D. Crown. Melvin F. Janowitz, R.C. Powers Condorcet Domains and Distributive Lattices Bernard Monjardet Consensus Hierarchies Defined by Decisive Families Robert C. Powers, Buck McMorris 12:30 - 2:00 Lunch 2:00 - 3:30 Session 2 (Chair: Steve Brams) Approval Voting: Three Examples Francesco De Sinopoli, Bhaskar Dutta and Jean-Francois Laslier Approval Voting for Committees: Threshold Approaches Peter Fishburn, Aleksandar Pekec 3:30 - 4:00 Coffee break 4:00 - 6:15 Session 3 (Chair: Jean-Francois Laslier) On the Difficulty of Computing the Winners of a Tournament Olivier Hudry Vote and Aggregation in Combinatorial Domains with Structured Preferences Jérôme Lang Preference Aggregation and Elicitation: Tractability in the Presence of Incompleteness and Incomparability M.S. Pini, F.Rossi, K. Venable, T. Walsh Friday, October 27, 2006 8:30 - 10:00 Session 4 (Chair: Michel Grabisch) Collective Decision Making Using GAI Networks C. Gonzales, P. Perny, S.Queiroz Reasoning about Controllable and Uncontrollable Variables Souhila Kaci and Leendert van der Torre 10:00 - 10:15 Coffee break 10:15 - 12:30 Session 5 (Chair: Thierry Marchant) A Minimax Procedure for Electing Committees Steve Brams, Marc Kilgour and Remzi Sanver An Axiomatic Characterization of the Prudent Order Preference Function Claude Lamboray The Unexpected Empirical Consensus among Consensus Methods Mike Regenwetter 12:30 - 2:30 Lunch 2:30 - 4:00 Session 6 (Chair: Olivier Hudry) Multilayered Decision Problems Dmitrii Lozovanul, Stefan Pickl Some Comments on Strategic Voting Eric Pacuit, Rohit Parikh 4:00 - 4:30 Coffee break 4:30 - 6:00 Session 7 (Chair: Mike Regenwetter) The Polyhedron of all Representations of a Semiorder Barry Balof, Jean-Paul Doignon and Samuel Fiorini On Influence and Power Indices Michel Grabisch, Agnieszka Rusinowska A Simple Bayes Factor for Testing Measurement-Theoretic Axioms Thierry Marchant Dinner Saturday, October 28, 2006 8:30 - 10:00 Session 8 (Chair: Jérôme Lang) Geometric Approach to Paradoxes of Voting Power Michael Jones New Results on Intervals Comparison Meltem Öztürk, Alexis Tsoukiàs 10:00 - 10:15 Coffee break 10:15 - 12:30 Session 9 (Chair: Alexis Tsoukiàs) On Enumerating the Kernels in a Bipolar-Valued Outranking Digraph Raymond Bisdorff Better Ways to Cut a Cake Steve Brams, Michael Jones and Christian Klamler Expressive Power of Weighted Propositional Formulas for Cardinal Preference Modelling Yann Chevaleyre, Ulle Endriss, Jérôme Lang