Fuzzification of set inclusion: theory and applications
Fuzzy Sets and Systems
Fuzzy sets and fuzzy logic: theory and applications
Fuzzy sets and fuzzy logic: theory and applications
Fuzzy Sets and Systems
The description logic handbook: theory, implementation, and applications
The description logic handbook: theory, implementation, and applications
Extending OWL by Fuzzy Description Logic
ICTAI '05 Proceedings of the 17th IEEE International Conference on Tools with Artificial Intelligence
Uncertainty and the Semantic Web
IEEE Intelligent Systems
Scalable querying services over fuzzy ontologies
Proceedings of the 17th international conference on World Wide Web
A hybrid approach to semantic web services matchmaking
International Journal of Approximate Reasoning
Managing uncertainty and vagueness in description logics for the Semantic Web
Web Semantics: Science, Services and Agents on the World Wide Web
Ontological approach to development of computing with words based systems
International Journal of Approximate Reasoning
Fuzzy description logics under Gödel semantics
International Journal of Approximate Reasoning
General Concept Inclusions in Fuzzy Description Logics
Proceedings of the 2006 conference on ECAI 2006: 17th European Conference on Artificial Intelligence August 29 -- September 1, 2006, Riva del Garda, Italy
Reasoning within fuzzy description logics
Journal of Artificial Intelligence Research
Reasoning with very expressive fuzzy description logics
Journal of Artificial Intelligence Research
Generalizing term subsumption languages to fuzzy logic
IJCAI'91 Proceedings of the 12th international joint conference on Artificial intelligence - Volume 1
Fuzzy description logics with general t-norms and datatypes
Fuzzy Sets and Systems
Reducing OWL entailment to description logic satisfiability
Web Semantics: Science, Services and Agents on the World Wide Web
On the properties of metamodeling in OWL
ISWC'05 Proceedings of the 4th international conference on The Semantic Web
Fuzzy view-based semantic search
ASWC'06 Proceedings of the First Asian conference on The Semantic Web
Fuzzy ontology representation using OWL 2
International Journal of Approximate Reasoning
Storing fuzzy ontology in fuzzy relational database
DEXA'11 Proceedings of the 22nd international conference on Database and expert systems applications - Volume Part II
Constructing geo-ontologies by reification of observation data
Proceedings of the 19th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
f-SROIQ(G): an expressive fuzzy Description Logic supporting fuzzy data type group
Proceedings of the 27th Annual ACM Symposium on Applied Computing
Construction of fuzzy ontologies from fuzzy XML models
Knowledge-Based Systems
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The Semantic Web is an extension of the current web, where information would have precisely defined meaning, based on knowledge representation languages. The current W3C standard for representing knowledge is the Web Ontology Language (OWL). OWL is based on Description Logics which is a popular knowledge representation formalism. Although, DLs are quire expressive they feature limitations with respect to what can be said about vague knowledge, which appears in several applications. Consequently, fuzzy extensions to OWL and DLs have gained considerable attention. In the current paper we study fuzzy extensions of the Semantic Web language OWL. First, we present the (abstract) syntax and semantics of a rather elementary fuzzy extension of OWL creating fuzzy OWL (f-OWL). More importantly we use this extension to provide an investigation on the semantics of several f-OWL axioms and more precisely for those which, in classical DLs, can be expressed in different but equivalent ways. Moreover, we present a translation method which reduces inference problems of f-OWL into inference problems of expressive fuzzy Description Logics, in order to provide reasoning support through fuzzy DLs. Finally, we present two further fuzzy extensions of OWL based on fuzzy subsumption and fuzzy nominals.