Fuzzy ontology representation using OWL 2☆

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Abstract

The need to deal with vague information in Semantic Web languages is rising in importance and, thus, calls for a standard way to represent such information. We may address this issue by either extending current Semantic Web languages to cope with vagueness, or by providing a procedure to represent such information within current standard languages and tools. In this work, we follow the latter approach, by identifying the syntactic differences that a fuzzy ontology language has to cope with, and by proposing a concrete methodology to represent fuzzy ontologies using OWL 2 annotation properties. We also report on some prototypical implementations: a plug-in to edit fuzzy ontologies using OWL 2 annotations and some parsers that translate fuzzy ontologies represented using our methodology into the languages supported by some reasoners.

Highlights

► Methodology for fuzzy ontology development. ► Representation of fuzzy ontologies using OWL 2. ► Implementation of a Protégé plug-in for fuzzy ontology edition. ► Implementation of some parsers translating into generic and popular reasoners.

Keywords

Fuzzy OWL 2
Fuzzy ontologies
Fuzzy languages for the semantic web
Fuzzy description logics

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☆

This paper is a revised and considerably extended version of “Representing Fuzzy Ontologies in OWL 2”, published in the Proceedings of the 19th IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2010).

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