The State of the Art in Developing Fuzzy Ontologies: A Survey
  Conceptual formalism supported by typical ontologies may not be sufficient to
represent uncertainty information which is caused due to the lack of clear cut
boundaries between concepts of a domain. Fuzzy ontologies are proposed to offer
a way to deal with this uncertainty. This paper describes the state of the art
in developing fuzzy ontologies. The survey is produced by studying about 35
works on developing fuzzy ontologies from a batch of 100 articles in the field
of fuzzy ontologies.
