Membership Function Assignment for Elements of Single OWL Ontology
  This paper develops the idea of membership function assignment for OWL (Web
Ontology Language) ontology elements in order to subsequently generate fuzzy
rules from this ontology. The task of membership function assignment for OWL
ontology elements had already been partially described, but this concerned the
case, when several OWL ontologies of the same domain were available, and they
were merged into a single ontology. The purpose of this paper is to present the
way of membership function assignment for OWL ontology elements in the case,
when there is the only one available ontology. Fuzzy rules, generated from the
OWL ontology, are necessary for supplement of the SWES (Semantic Web Expert
System) knowledge base. SWES is an expert system, which will be able to extract
knowledge from OWL ontologies, found in the Web, and will serve as a universal
expert for the user.
