- From: Graham Klyne <Graham.Klyne@Baltimore.com>
- Date: Thu, 12 Jul 2001 11:58:12 +0100
- To: Aaron Swartz <me@aaronsw.com>
- Cc: RDF Core <w3c-rdfcore-wg@w3.org>
At 01:01 PM 7/11/01 -0500, Aaron Swartz wrote:
>Here's some questions (with proposed answers) to get us thinking about
>rdfms-graph. I'm also curious whether there are other questions that
>should be considered part of the resolution -- the issue description isn't
>really enough for me to tell.
>
>1) Does an RDF graph have a URI?
>
>It is a Resource, and it can. M&S does not define a specific one.
I agree. I'm not sure anything more needs to be said. Any such URI is not
part of the abstract syntax/model.
>2) Is an RDF graph a set or a bag?
>
>A set, as it has conjunctive assertion semantics, or whatever they're called:
> (A && A) => (A)
Again, I agree. I'm not sure anything more needs to be said.
>3) Can a node exist in a graph without any properties?
>
>Yes. This is indicated in the current XML syntax with an empty Description
>element.
Here, I disagree: there is no obvious way to represent an isolated node in
an abstract syntax/model based on triples. I think an empty <Description>
adds nothing to the semantics so should not appear in the abstract
syntax/model.
#g
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Graham Klyne Baltimore Technologies
Strategic Research Content Security Group
<Graham.Klyne@Baltimore.com> <http://www.mimesweeper.com>
<http://www.baltimore.com>
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Received on Thursday, 12 July 2001 07:36:26 UTC