Abstract
Fuzzy knowledge is the base of fuzzy systems. Ontology is adopted as a standard for sharing and reusing knowledge on the semantic Web, and fuzzy ontology is an extension of domain ontology for solving the uncertainty problems. In order to achieve fuzzy knowledge sharing for fuzzy systems, this paper utilizes fuzzy ontology to represent formally the fuzzy linguistic variables, considering the semantic relationships between fuzzy concepts defined in fuzzy linguistic variable ontologies. The process to construct fuzzy linguistic variables ontology is discussed. Taking the fuzzy control system of washing machine for example, this paper builds the fuzzy knowledge sharing system with Web ontology language (OWL), which shows that this research facilitates knowledge management for fuzzy systems on the semantic Web.
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