Show simple item record

dc.contributor.authorGovernatori, Guido
dc.contributor.authorOlivieri, Francesco
dc.contributor.authorCristani, Matteo
dc.contributor.authorScannapieco, Simone
dc.date.accessioned2019-06-10T03:53:36Z
dc.date.available2019-06-10T03:53:36Z
dc.date.issued2019
dc.identifier.issn0888-613X
dc.identifier.doi10.1016/j.ijar.2018.10.020
dc.identifier.urihttp://hdl.handle.net/10072/385283
dc.description.abstractThere are several contexts of non-monotonic reasoning where a priority between rules is established with the purpose of solving conflicts. We investigate how to modify such a priority (preference) relation in a non-monotonic logic in order to change the conclusions of the theory itself. We shall argue that the approach we adopt has a natural counterpart in legal reasoning and argumentation, where users cannot typically change the facts or the rules, but can propose their preferences about the relative strength of the rules. The main result of the present work is the proof that the problem of revising a non-monotonic theory by changing only the superiority order between conflicting rules is, in general, computationally hard. After such an analysis, we identify three contraction/revision/update operations and study them against the AGM postulates for belief revision, to discover that only a (small) part of these postulates are satisfied in the specific non-monotonic setting.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherELSEVIER SCIENCE INC
dc.relation.ispartofpagefrom205
dc.relation.ispartofpageto230
dc.relation.ispartofjournalInternational Journal of Approximate Reasoning
dc.relation.ispartofvolume104
dc.subject.fieldofresearchNumerical and Computational Mathematics
dc.subject.fieldofresearchStatistics
dc.subject.fieldofresearchArtificial Intelligence and Image Processing
dc.subject.fieldofresearchcode0103
dc.subject.fieldofresearchcode0104
dc.subject.fieldofresearchcode0801
dc.titleRevision of defeasible preferences
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.description.versionPost-print
gro.rights.copyright© 2019 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorGovernatori, Guido
gro.griffith.authorOlivieri, Francesco


Files in this item

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record