Reasoning with Levels of Modalities in BDI Logic

Abstract

Modelling real world problems using rational agents has been heavily investigated over the past two decades. BDI (Beliefs, Desires, and Intentions) Logic has been widely used to represent and reason about rational agency. However, in the real world, we often have to deal with different levels of confidence in the beliefs we hold, desires we have, and intentions that we commit to. This paper proposes the basis of a framework that extends BDI Logic to take into account qualitative levels of the mentalistic notions of beliefs, desires, and intentions. We also describe a set of axioms and properties of the extended logic.