- From: Mark Baker <distobj@acm.org>
- Date: Sun, 22 Jul 2007 16:31:08 -0400
- To: "Dan Brickley" <danbri@danbri.org>
- Cc: "Chris Bizer" <chris@bizer.de>, www-tag@w3.org, semantic-web@w3.org, "Linking Open Data" <linking-open-data@simile.mit.edu>
Hi Dan, On 7/22/07, Dan Brickley <danbri@danbri.org> wrote: > Mark Baker wrote: > > IMO, those URIs identify different resources. I say this because they > > all return different representations when I dereference them. If they > > identified the same resource then their representations would be > > identical (see Roy's definition of resource in his REST dissertation). > > I am suprised to hear you say that. The Web allows that you might > receive different resource representations, or indeed nothing, on each > dereference. For example - a weather site, or a fortunate cookie site. > TimBL is not the weather, nor is he a fortune cookie, admittedly. But it > doesn't follow from the fact that you've received different > representations in different HTTP conversations, that those > conversations were about distinct things. That's an interesting choice of words, because I *fully* agree that the representations returned from all four of those URIs are *about* Tim, I just don't believe that makes them the same resource. The difference is the same as that between the value of rdf:about in an RDF/XML representation, and the URI which provided that representation, e.g. (hypothetically) GET http://dbpedia.org/resource/Tim_Berners-Lee HTTP/1.1 --> Content-Type: application/rdf+xml <rdf:Description rdf:about="http://www.w3.org/People/Berners-Lee/card#i"> ... </rdf:Description> Mark. -- Mark Baker. Ottawa, Ontario, CANADA. http://www.markbaker.ca Coactus; Web-inspired integration strategies http://www.coactus.com
Received on Sunday, 22 July 2007 20:31:12 UTC