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Published in:
2019 | OriginalPaper | Chapter
LiteMat, an Encoding Scheme with RDFS++ and Multiple Inheritance Support
Authors : Olivier Curé, Weiqin Xu, Hubert Naacke, Philippe Calvez
Published in: The Semantic Web: ESWC 2019 Satellite Events
Publisher: Springer International Publishing
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Abstract
In this paper, we extend LiteMat, an RDFS and
owl:sameAs inference-enabled RDF encoding scheme, which is used in a distributed knowledge graph data management system. Our extensions enable to reach RDFS++ expressiveness by integrating owl:transitiveProperty and owl:inverseOf properties. Considering the latter, owl:inverseOf property, we propose a simple solution that involves a dictionary look-up at query run-time. For the former, we present an efficient approach to encode individuals involved in chain and tree structures of a transitive property. Moreover, our extension also provides an efficient solution to the multiple inheritance problem which sometimes encountered in the concept hierarchy of ontologies. We provide details of a distributed implementation and highlight the efficiency of our encoding and query processing approaches over large synthetic datasets.