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Auflistung nach Schlagwort "Ontology-mediated query answering"

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  • Zeitschriftenartikel
    A Short Survey on Inconsistency Handling in Ontology-Mediated Query Answering
    (KI - Künstliche Intelligenz: Vol. 34, No. 4, 2020) Bienvenu, Meghyn
    This paper provides a concise overview of the literature on inconsistency handling for ontology-mediated query answering, a topic which has grown into an active area of research over the last decade. The focus of this survey is on the case where errors are localized in the data (i.e., the ontology is deemed reliable) and where inconsistency-tolerant semantics are employed with the aim of obtaining meaningful information from inconsistent knowledge bases.
  • Zeitschriftenartikel
    Data Access With Horn Ontologies: Where Description Logics Meet Existential Rules
    (KI - Künstliche Intelligenz: Vol. 34, No. 4, 2020) Mugnier, Marie-Laure
    Two main families of ontology languages are considered in the context of data access, namely Horn description logics and existential rules. In this paper, we review the semantic relationships between these families in the light of the ontology-mediated query answering problem. To this end, we rely on the standard translation of description logics in first-order logic and on the notion of semantic emulation. We focus on description logics and classes of existential rules for which the conjunctive query answering problem has polynomial data complexity.