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doi:10.22028/D291-24868
Titel: | How to prefer more specific defaults in terminological default logic |
VerfasserIn: | Baader, Franz Hollunder, Bernhard |
Sprache: | Englisch |
Erscheinungsjahr: | 1992 |
Quelle: | Kaiserslautern ; Saarbrücken : DFKI, 1992 |
Kontrollierte Schlagwörter: | Künstliche Intelligenz Default-Logik Formale Semantik Terminologische Logik |
DDC-Sachgruppe: | 004 Informatik |
Dokumenttyp: | Forschungsbericht (Report zu Forschungsprojekten) |
Abstract: | In a recent paper we have proposed terminological default logic as a formalism which combines both means for structured representation of classes and objects, and for default inheritance of properties. The major drawback which terminological default logic inherits from general default logic is that it does not take precedence of more specific defaults over more general ones into account. This behaviour has already been criticized in the general context of default logic, but it is all the more problematic in the terminological case where the emphasis lies on the hierarchical organization of concepts. The present paper addresses the problem of modifying terminological default logic such that more specific defaults are preferred. It turns out that the existing approaches for expressing priorities between defaults do not seem to be appropriate for this purpose. Therefore we shall consider an alternative approach for dealing with prioritization in the framework of Reiter's default logic. The formalism is presented in the general setting of default logic where priorities are given by an arbitrary partial ordering on the defaults. We shall exhibit some interesting properties of the new formalism, compare it with existing approaches, and describe an algorithm for computing extensions. |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291-scidok-36217 hdl:20.500.11880/24924 http://dx.doi.org/10.22028/D291-24868 |
Schriftenreihe: | Research report / Deutsches Forschungszentrum für Künstliche Intelligenz [ISSN 0946-008x] |
Band: | 92-58 |
Datum des Eintrags: | 22-Jun-2011 |
Fakultät: | SE - Sonstige Einrichtungen |
Fachrichtung: | SE - DFKI Deutsches Forschungszentrum für Künstliche Intelligenz |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
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RR_92_58.pdf | 15,83 MB | Adobe PDF | Öffnen/Anzeigen |
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