- From: David Booth <david@dbooth.org>
- Date: Thu, 12 Aug 2010 18:10:56 -0400
- To: Dave Reynolds <dave.e.reynolds@gmail.com>
- Cc: nathan@webr3.org, Semantic Web <semantic-web@w3.org>, Richard Cyganiak <richard@cyganiak.de>
On Thu, 2010-08-12 at 21:57 +0100, Dave Reynolds wrote: [ . . . ] > > "http://xmlns.com/foaf/0.1/name" a foo:URI; > > foo:uriLength 30; > > foo:uriAuthorityHost "xmlns.com"; > > foo:xxxxx <http://xmlns.com/foaf/0.1/name>; > > > > The specific question is, how do you unambiguously identify a URI in > > order to make statements about the lexical form of that URI? > > In OWL full the domain of owl:Thing is the whole universe of discourse, > including literals. So I believe in OWL Full you can equate a individual > with a literal and then describe properties of that individual: > > [] owl:sameAs "http://xmlns.com/foaf/0.1/name"^^xsd:anyURI; > foo:uriLength 30; > foo:uriAuthorityHost "xmlns.com" . > > Using a blank node rather than a URI is not necessary but is clearer. . . . except of course that it *is* necessary at present, because at present RDF does not permit literals as subjects. -- David Booth, Ph.D. Cleveland Clinic (contractor) http://dbooth.org/ Opinions expressed herein are those of the author and do not necessarily reflect those of Cleveland Clinic.
Received on Thursday, 12 August 2010 22:11:24 UTC