Casini, GFerme, EMeyer, TVarzinczak, I2019-03-072019-03-072018-10Casini, G. et al. 2018. A semantic perspective on belief change in a preferential non-monotonic framework. 16th International Conference on Principles of Knowledge Representation and Reasoning, Tempe, Arizona, USA, 30 October 2018 - 2 November 2018, pp. 220-229https://aaai.org/ocs/index.php/KR/KR18/paper/view/18071http://pubs.cs.uct.ac.za/archive/00001303/01/KR_2018_paper_204.pdfhttps://aaai.org/ocs/index.php/KR/KR18/paper/view/18071/17146http://hdl.handle.net/10204/10749Paper presented at the 16th International Conference on Principles of Knowledge Representation and Reasoning, Tempe, Arizona, USA, 30 October 2018 - 2 November 2018Belief change and non-monotonic reasoning are usually viewed as two sides of the same coin, with results showing that one can formally be defined in terms of the other. In this paper we investigate the integration of the two formalisms by studying belief change for a (preferential) non-monotonic framework. We show that the standard AGM approach to belief change can be transferred to a preferential non-monotonic framework in the sense that change operations can be defined on conditional knowledge bases. We take as a point of departure the results presented by Casini and Meyer (2017), and we develop and extend such results with characterisations based on semantics and entrenchment relations, showing how some of the constructions defined for propositional logic can be lifted to our preferential non-monotonic framework.enBelief changeConference PresentationCasini, G., Ferme, E., Meyer, T., & Varzinczak, I. (2018). A semantic perspective on belief change in a preferential non-monotonic framework. AAAI. http://hdl.handle.net/10204/10749Casini, G, E Ferme, T Meyer, and I Varzinczak. "A semantic perspective on belief change in a preferential non-monotonic framework." (2018): http://hdl.handle.net/10204/10749Casini G, Ferme E, Meyer T, Varzinczak I, A semantic perspective on belief change in a preferential non-monotonic framework; AAAI; 2018. http://hdl.handle.net/10204/10749 .TY - Conference Presentation AU - Casini, G AU - Ferme, E AU - Meyer, T AU - Varzinczak, I AB - Belief change and non-monotonic reasoning are usually viewed as two sides of the same coin, with results showing that one can formally be defined in terms of the other. In this paper we investigate the integration of the two formalisms by studying belief change for a (preferential) non-monotonic framework. We show that the standard AGM approach to belief change can be transferred to a preferential non-monotonic framework in the sense that change operations can be defined on conditional knowledge bases. We take as a point of departure the results presented by Casini and Meyer (2017), and we develop and extend such results with characterisations based on semantics and entrenchment relations, showing how some of the constructions defined for propositional logic can be lifted to our preferential non-monotonic framework. DA - 2018-10 DB - ResearchSpace DP - CSIR KW - Belief change LK - https://researchspace.csir.co.za PY - 2018 T1 - A semantic perspective on belief change in a preferential non-monotonic framework TI - A semantic perspective on belief change in a preferential non-monotonic framework UR - http://hdl.handle.net/10204/10749 ER -