At 1:00 PM +0800 1/2/04, wwmm wrote: >Hi, > >Is OWL specification a ontology? >If so, Which kind of ontology is OWL specification? >It is a representational ontology or task ontology? > >Yours sincerely You ask a hard question - because it hinges on exactly what one defines as an ontology, a representational ontology, or a task ontology. OWL is precisely specified in our documents and in a sense the only true answer to your question is "what is in the documents is what OWL is" --- that said, perhaps the following will be useful in helping you to answer your own question: 1 - OWL minimizes the "content" component purposely (by charter) - in other words OWL is not a specific set of content, but rather a convention for expressing content. There are some terms which are defined by OWL (or used consistently from RDF and RDF Schema), but in general it is meant to be a language for defining ontologies - not an "ontology" unto itself 2 - OWL has been used in many cases to define what has sometimes been called a "representational ontology" where that means soemthing like a specification of physical entities and their relationships. Many good examples of this can be found in the DAML Ontology Library [1] 3 - OWL has also been used to define "task" or "process" ontologies, where this term is used to mean a description of things in the world that change over time or a description of what the AI community has called in the past "planning operators." The best example I know of this can be found in the OWL-S work, which aims to use OWL to provide semantics for Web Service applications [2]. I hope this helps. Jim Hendler [1] http://www.daml.org/ontologies/ [2] http://www.daml.org/services/owl-s/1.0/ -- Professor James Hendler http://www.cs.umd.edu/users/hendler Director, Semantic Web and Agent Technologies 301-405-2696 Maryland Information and Network Dynamics Lab. 301-405-6707 (Fax) Univ of Maryland, College Park, MD 20742 240-277-3388 (Cell)Received on Sunday, 4 January 2004 15:27:50 GMT
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