Changing Legal Systems: Abrogation and Annulment Part I: Revision of Defeasible Theories

  • Authors:
  • Guido Governatori;Antonino Rotolo

  • Affiliations:
  • School of ITEE, The University of Queensland, Australia;CIRSFID/Law School, University of Bologna, Italy

  • Venue:
  • DEON '08 Proceedings of the 9th international conference on Deontic Logic in Computer Science
  • Year:
  • 2008

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Abstract

In this paper we investigate how to model legal abrogation and annulment in Defeasible Logic. We examine some options that embed in this setting, and similar rule-based systems, ideas from belief and base revision. In both cases, our conclusion is negative, which suggests to adopt a different logical model.