a2 Artificial me Intelligence ELSEVIER Artificial Intelligence 141 (2002) 227-228 www.elsevier.com/locate/artint Author Index—Volume 141 (2002) Aler, R., D. Borrajo and P. Isasi Using genetic programming to learn and improve control knowledge Bench-Capon, T.J.M., see Dunne, P.E. Bessiére, C., P. Meseguer, E.C. Freuder and J. Larrosa On forward checking for non-binary constraint satisfaction (Research Note) Borrajo, D., see Aler, R Chan, T.Y.T Unifying metric approach to the triple parity Delgado, J Emergence of social conventions in complex networks (Research Note) Dimopoulos, Y., B. Nebel and F. Toni On the computational complexity of assumption-based argumentation for default reasoning Dunne, P.E. and T.J.M. Bench-Capon Coherence in finite argument systems (Research Note) Falappa, M.A., G. Kern-Isberner and G.R. Simari Explanations, belief revision and defeasible reasoning Freuder, E.C., see Bessiére, C Gillispie, S.B. and M.D. Perlman The size distribution for Markov equivalence classes of acyclic digraph models Isasi, P., see Aler, R Jgsang, A The consensus operator for combining beliefs (Research Note) Kern-Isberner, G., see Falappa, M.A. Lang, J., P. Liberatore and P. Marquis Conditional independence in propositional logic Larrosa, J., see Bessiére, C Liberatore, P., see Lang, J Marquis, P., see Lang, J Meseguer, P., see Bessiére, C Nebel, B., see Dimopoulos, ¥ 0004-3702/2002 Published by Elsevier Science PIL SOO004-3702(02)00330 Perlman, M.D., see Gillispie, S.B Simari, G.R., see Falappa, M.A Toni, F., see Dimopoulos, ¥