Anytime Belief Revision

Abstract

Belief Revision is a ubiquitous process underlying many forms of intelligent behaviour. The AGM paradigm is a powerful framework for modeling and implementing belief revision systems based on the principle of Minimal Change; it provides a rich and rigorous foundation for computer-based belief revision architectures. Maxi-adjustment is a belief revision strategy for theory bases that can be implemented using a standard theorem prover, and one that has been used successfully for several applications. In this paper we provide an anytime decision procedure for maxi-adjustments, and study its complexity. Furthermore, we outline a set of guidelines that serve as a protomethodology for building belief revision systems employing a maxi-adjustment. The algorithm is under development in the belief revision module of the CIN Project. 1 Introduction Belief Revision underlies many forms of intelligent behaviour. An intelligent agent must be adept at revising its beliefs in a rational way. The AGM...