- From: Graham Klyne <GK@ninebynine.org>
- Date: Thu, 18 Jan 2001 16:35:14 +0000
- To: Dan Brickley <danbri@w3.org>
- Cc: "McBride, Brian" <bwm@hplb.hpl.hp.com>, Tim Berners-Lee <timbl@w3.org>, <www-rdf-logic@w3.org>
At 07:56 AM 1/18/01 -0500, Dan Brickley wrote: [...] >question 1: >Does John know the email address of the person he believes Mary to live with? > >question 2: >Is the answer to Q1 determined by the semantics of the 'believedBy' >relation we're using? ie. could we have 'believedby-transparent' vs >'believedby-opaque' flavours of this relation to capture this distinction. > >question 3: >Whether reading (2) above is read as '...the person', or '...a person' >depends on knowing that foaf:mbox is a unique property. However John (or >mary, or the first person narrator) may not know (or believe) this. Might >John then believe that Mary livesWith any/all persons with that mail >address? > >IMHO RDF as-is lacks precision in this area; but I stick by my story that >this is a problem for the Web at large. One that it would be nice to see >folk on this list have a crack at... Dan, I don't think it's the role of RDF per se to have precision in this area. Rather, RDF is a kit of parts that can (hopefully) be used, in conjunction with semantics separately ascribed to certain RDF properties and classes, to build statements that precisely convey these meanings. I think that, in saying this, I am generally in agreement with your assertion that this is a problem for the web at large. #g
Received on Thursday, 18 January 2001 12:03:08 UTC