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Wikidata has a large ontology with classes at several orders. The Wikidata ontology has long been known to have violations of class order and information related to class order that appears suspect. SPARQL queries were evaluated against Wikidata to d
Externí odkaz:
http://arxiv.org/abs/2411.15550
Disjointness checks are among the most important constraint checks in a knowledge base and can be used to help detect and correct incorrect statements and internal contradictions. Wikidata is a very large, community-managed knowledge base. Because of
Externí odkaz:
http://arxiv.org/abs/2410.13707
Multi-attributed relational structures (MARSs) have been proposed as a formal data model for generalized property graphs, along with multi-attributed rule-based predicate logic (MARPL) as a useful rule-based logic in which to write inference rules ov
Externí odkaz:
http://arxiv.org/abs/2008.06599
Wikidata constraints, albeit useful, are represented and processed in an incomplete, ad hoc fashion. Constraint declarations do not fully express their meaning, and thus do not provide a precise, unambiguous basis for constraint specification, or a l
Externí odkaz:
http://arxiv.org/abs/2008.03900
Autor:
Patel-Schneider, Peter F.
ASHACL, a variant of the W3C Shapes Constraint Language, is designed to determine whether an RDF graph meets some conditions. These conditions are grouped into shapes, which validate whether particular RDF terms each meet the constraints of the shape
Externí odkaz:
http://arxiv.org/abs/1702.01795
Autor:
Patel-Schneider, Peter F.
RDF and Description Logics work in an open-world setting where absence of information is not information about absence. Nevertheless, Description Logic axioms can be interpreted in a closed-world setting and in this setting they can be used for both
Externí odkaz:
http://arxiv.org/abs/1411.4156
Publikováno v:
In Web Semantics: Science, Services and Agents on the World Wide Web 2007 5(4):240-250
Publikováno v:
In Web Semantics: Science, Services and Agents on the World Wide Web 2005 3(1):23-40
Publikováno v:
In Web Semantics: Science, Services and Agents on the World Wide Web 2003 1(1):7-26
Publikováno v:
In Artificial Intelligence 1999 114(1):203-237