We present a logic for representing and reasoning with qualitative statements of preference
and normality and describe how these may interact in decision making under uncertainty …

We present a logic for reasoning about belief revision in which the process of revising a
knowledge base by some sentence is represented with a conditional connective. The …

Possibilistic logic has been proposed as a numerical formalism for reasoning with
uncertainty. There has been interest in developing qualitative accounts of possibility, as well …

Introduces a logic endowed with a two-place modal connective that has the intended
meaning of" if/spl alpha/, then normally/spl beta/". On top of providing a well defined tool for …

There is a fundamental di erence between a conditional obligation being violated by a fact,
and a conditional obligation being overridden by another conditional obligation. In this …

Abstract The Katsuno and Mendelzon theory of belief update has been proposed as a
reasonable model for revising beliefs about a changing world. However, the semantics of …

We explore the relationship between theories of nonmonotonic inference and belief revision
using modal and conditional representations. We demonstrate that the logics governing …