Re: making statements about the lexical form of a URI

• From: Dave Reynolds <dave.e.reynolds@gmail.com>
• Date: Thu, 12 Aug 2010 21:57:26 +0100
• To: nathan@webr3.org
• Cc: Semantic Web <semantic-web@w3.org>, Richard Cyganiak <richard@cyganiak.de>
• Message-ID: <1281646646.2318.9.camel@dave-desktop>

On Thu, 2010-08-12 at 20:08 +0100, Nathan wrote: 
> Hi All,
> 
> Here's an example mentioned on another list by Richard Cyganiak v recently:
> 
>    <http://xmlns.com/foaf/0.1/name> foo:uriLength 30 .
>    <http://xmlns.com/foaf/0.1/name> foo:uriLength 13 .
>    <http://xmlns.com/foaf/0.1/name> owl:sameAs <http://ex.org> .
> 
> and here's an example of what one would like to achieve:
> 
>    "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.

Whether this is of any use to you in a practical setting with existing tools is a different question.

Dave

Received on Thursday, 12 August 2010 20:58:02 UTC