Belief change as change in epistemic entrenchment

Nayak

Paul Nelson

Hanan Polansky

pp. 143-174

in: Synthese 109 (2), 1996.

Abstract

In this paper, it is argued that both the belief state and its input should be represented as epistemic entrenchment (EE) relations. A belief revision operation is constructed that updates a given EE relation to a new one in light of an evidential EE relation, and an axiomatic characterization of this operation is given. Unlike most belief revision operations, the one developed here can handle both “multiple belief revision” and “iterated belief revision”.