2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/30195In this paper we introduce a nonmonotonic framework for belief revision in which reasoning about the reliability of different pieces of information based on meta-knowledge about the information is possible, and where revision strategies can be described declaratively. The approach is based on a Poole-style system for default reasoning in which entrenchment information is represented in the logical language. A notion of inference based on the least fixed point of a monotone operator is used to make sure that all theories possess a consistent set of conclusions.Artificial IntelligenceLogic in Computer ScienceI.2.3text