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dc.contributor.authorWang, KW
dc.contributor.authorZhou, LZ
dc.contributor.editorLarry Kerschberg et al
dc.date.accessioned2006-07-27
dc.date.accessioned2014-06-19T22:40:20Z
dc.date.accessioned2017-03-02T00:10:27Z
dc.date.available2017-03-02T00:10:27Z
dc.date.issued2001
dc.date.modified2014-06-19T22:40:20Z
dc.identifier.issn0925-9902
dc.identifier.doi10.1023/A:1011271902410
dc.identifier.urihttp://hdl.handle.net/10072/60603
dc.description.abstractWe present a simple and intuitive extension GCWAG of the generalized closed world assumption (GCWA) from positive disjunctive deductive databases to general disjunctive deductive databases (with default negation). This semantics is defined in terms of unfounded sets and possesses an argumentation-theoretic characterization. We also provide a top-down procedure for GCWAG, which is sound and complete with respect to GCWAG. We investigate two query evaluation methods for GCWAG: database partition, and database splitting. The basic idea of these methods is to divide the original deductive database into several smaller sub-databases and the query evaluation in the original database is transformed into the problem of query evaluation in smaller or simplified components. We prove that these two methods of query evaluation are all sound with respect to GCWAG.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSpringer
dc.publisher.placeNetherlands
dc.relation.ispartofpagefrom229
dc.relation.ispartofpageto253
dc.relation.ispartofissue3
dc.relation.ispartofjournalJournal of Intelligent Information Systems
dc.relation.ispartofvolume16
dc.subject.fieldofresearchArtificial Intelligence and Image Processing
dc.subject.fieldofresearchData Format
dc.subject.fieldofresearchcode0801
dc.subject.fieldofresearchcode0804
dc.titleAn extension to GCWA and query evaluation for disjunctive deductive databases
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codec1x
gro.facultyFaculty of Engineering and Information Technology
gro.hasfulltextNo Full Text
gro.griffith.authorWang, Kewen


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