Belief change

Abstract

In this paper the authors present a brief overview of belief change, a research area concerned with the question of how a rational agent ought to change its mind in the face of new, possibly conflicting, information. The authors limit themselves to logic-based belief change, with a particular emphasis on classical propositional logic as the underlying logic in which beliefs are to be represented. Their intention is to provide the reader with a basic introduction to the work done in this area over the past 30 years. In doing so they hope to sketch the main historical results, provide appropriate pointers to further references, and discuss some current developments. The authors trust that this will spur on the interested reader to learn more about the topic, and perhaps to join them in the further development of this exciting field of research.