- From: Jim Hendler <hendler@cs.umd.edu>
- Date: Sun, 10 Nov 2002 21:18:01 -0500
- To: "Jonathan Borden" <jonathan@openhealth.org>
- Cc: <www-webont-wg@w3.org>
At 8:48 PM -0500 11/10/02, Jonathan Borden wrote: >Jim Hendler wrote: > >> > > >> >> Namespace definitions to RDF and to Chris' document >> >> >> >> <rdf:RDF> >> >> <chris:person rdf:id="Hendler" /> >> >> </rdf:RDF> >> > >> >Well what if *I* say something like: >> > >> >chris:person owl:subClassOf owl:Class . >> > >> >elsewhere, and suppose I believe this :-), now your supposedly perfect >RDF >> >document *does* use OWL terms... >> >> I don't understand - you cannot write that in my document - so you >> can only discover that chris:person uses owl terms by going and >> looking in the chris: document. MY document will never be >> distinguishable technically from any other RDF document - I just want >> a piece of terminology to refer to it as something so I can say "when >> you have a document that is an RDF document but some of the documents >> it links to are OWL documents ..." in a lot less words - i.e. "When >> you have an Owl Data Document ... " > >Yes but I am saying that your document is actually an OWL _Ontology_ >document -- it defines a class! It does? What class is it defining? > > I don't understand why this seem to be controversial - seems obvious >> to me we will need to refer to these documents a lot (i.e. my web >> page is linked to one of them, and I hope lots of other people's will >> be soon) > >It should not be controversial that the nature of RDF blurs the distinction >between ontology and data just as LISP blurred the distinction between >program and data. This is the essence of the classes as intances feature. >Perhaps we ought to just say that no crisp distinction exists, and explain >this in plain English. > >Jonathan -- Professor James Hendler hendler@cs.umd.edu 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 240-731-3822 (Cell) http://www.cs.umd.edu/users/hendler
Received on Sunday, 10 November 2002 21:18:11 UTC