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Retroactive Legal Changes and Revision Theory in Defeasible Logic

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Deontic Logic in Computer Science (DEON 2010)

Part of the book series: Lecture Notes in Computer Science ((LNAI,volume 6181))

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Abstract

In earlier works, we used Defeasible Logic to argue that techniques from belief and base revision encounter a number of difficulties in modelling legal dynamics. In particular, we showed that these techniques are not suitable when legal changes are retroactive. This suggested to adopt a different logical model able to express two main timelines, one internal to a given temporal version of the legal system, and another relative to how the legal system evolves over time. In this paper, we adjust our view and show that, under some restrictions, ideas from base revision, if applied to Defeasible Logic or to similar rule-based systems, can indeed capture some significant aspects of annulments, abrogations, and derogations.

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Author information

Authors and Affiliations

  1. CIRSFID and Law School, University of Bologna, Italy

    Antonino Rotolo

Authors
  1. Antonino Rotolo
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Editor information

Editors and Affiliations

  1. Queensland Research Laboratory, National ICT Australia, 4067, St Lucia, QLD, Australia

    Guido Governatori

  2. European University Institute, Badia Fiesolana, 50016 San Domenico di Fiesole, Florence, Italy, and University of Bologna, Via Zamboni, 33, 40126, Bologna, Italy

    Giovanni Sartor

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Rotolo, A. (2010). Retroactive Legal Changes and Revision Theory in Defeasible Logic. In: Governatori, G., Sartor, G. (eds) Deontic Logic in Computer Science. DEON 2010. Lecture Notes in Computer Science(), vol 6181. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-14183-6_10

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  • DOI: https://doi.org/10.1007/978-3-642-14183-6_10

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-14182-9

  • Online ISBN: 978-3-642-14183-6

  • eBook Packages: Computer ScienceComputer Science (R0)

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