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Re: making statements about the lexical form of a URI

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>
Message-ID: <1281651056.18457.2160.camel@dbooth-laptop>
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

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