Table of Contents

T. Gaasterland, P. Godfrey, J. Minker: An overview of cooperative answering
W. Chu, Q. Chen, M. Merzbacher: Cobase: a cooperative database system
A. Hemerly, M. Casanova, A. Furtado: Exploiting user models to avoid misconstruals
R. Nossum: Modal logics for practical reasoning
R. Demolombe, A. Jones: Deriving answers to safety queries
P. Mathieu, J-P. Delahaye: Abductive reasoning in three-valued logic for knowledge bases
D. Gabbay, J. Pitt, R. Kempson: Labelled abduction and relevance reasoning
A. Bonner: Hypothetical reasoning with intuitionistic logic
C. Boutilier: A modal analysis for subjunctive queries
G. Grahne, A. Mendelzon: Updates and subjunctive queries