OWL Standard

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The OWL Standard is an ontology description language standard designed for sharing ontologies on the Web.


  • TBD
    • OWL-Lite is based on the SHIF (D) and OWL-DL is based on the SHOIN (D) description logics. There are a number of differences between these two flavors. Most important for us were value restrictions and exact cardinality restrictions in OWL-DL. Whereas OWL-Lite allows only zero, one-to-one, and one-to-many relations, In OWL-DL we can specify an exact range of allowed relationships for a class. We can say, for example, that a student must have at least 3, but no more than 5 advisors on his committee. Just like OWL-Lite, OWL-DL is fully decidable."




  • http://www.w3.org/TR/owl2-overview/ OWL 2 Web Ontology Language, Document Overview
    • The OWL 2 Web Ontology Language, informally OWL 2, is an ontology language for the Semantic Web with formally defined meaning. OWL 2 ontologies provide classes, properties, individuals, and data values and are stored as Semantic Web documents. OWL 2 ontologies can be used along with information written in RDF, and OWL 2 ontologies themselves are primarily exchanged as RDF documents.
    • … Ontologies are formalized vocabularies of terms, often covering a specific domain and shared by a community of users. They specify the definitions of terms by describing their relationships with other terms in the ontology.
    • … OWL 2 is an extension and revision of the OWL Web Ontology Language developed by the W3C Web Ontology Working Group and published in 2004 (referred to hereafter as “OWL 1”). OWL 2 is being developed (and this document was written) by a follow-on group, the W3C OWL Working Group. Like OWL 1, OWL 2 is designed to facilitate ontology development and sharing via the Web, with the ultimate goal of making Web content more accessible to machines.