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Re: RDFCore WG 2001-06-01 Teleconference Agenda

From: Graham Klyne <Graham.Klyne@Baltimore.com>
Date: Fri, 01 Jun 2001 14:49:41 +0100
Message-Id: <5.0.2.1.2.20010601141922.03692db0@joy.songbird.com>
To: Brian McBride <bwm@hplb.hpl.hp.com>
Cc: rdf core <w3c-rdfcore-wg@w3.org>
At 03:04 PM 5/31/01 +0100, Brian McBride wrote:
>  A8: Graham Klyne  to summarize www-rdf-logic perspective of reification as
>                    it applies to both logic and rdf andreport back to 
> rdfcore wg

In addition to my earlier response [5]:

More recent discussion on the RDF-logic list has focused on the 
relationship between "reification" and syntax, and the nature of RDF 
"syntax".  A viewpoint that emerges from this discussion is that the RDF 
structure of triples is too simple to attach any meaningful 
semantics;  reification can be viewed as one way to create a syntactically 
richer structure to which richer semantics can be attached.

Echos of this idea can be seen in a number of proposals that have appeared 
on the list:

(a) The model-theoretic semantics for DAML+OIL [1];  Most of the semantic 
mappings are related to specific named RDF properties/nodes, or collections 
of RDF statements.  Thus, it goes beyond constructs that can be identified 
in the basic triple syntax/structure of RDF.  This paper also shows how 
semantics might be described without having specific syntactic structures 
to hang them on (though I would claim that it may be more difficult to 
demonstrate that the semantics thus described give complete coverage of the 
language).

(b) Jonathan Borden's proposed abstract syntax for RDF [2].

(c) Wolfram Conen/Reinhold Klapsing's proposal to map reification/containers
     into a richer syntactic structure.

Also, in the exchange between Pat Hayes and myself about syntax and 
structure [4].

#g
--

[1] http://www.daml.org/2001/03/model-theoretic-semantics.html

[2] http://lists.w3.org/Archives/Public/www-rdf-logic/2001May/0342.html
     http://www.openhealth.org/RDF/RDFAbstractSyntax.html

[3] http://lists.w3.org/Archives/Public/www-rdf-logic/2001May/0390.html
     http://nestroy.wi-inf.uni-essen.de/rdf/RDFmodel_revisited_v10.pdf

[4] http://lists.w3.org/Archives/Public/www-rdf-logic/2001May/0379.html
     http://lists.w3.org/Archives/Public/www-rdf-logic/2001May/0388.html
     http://lists.w3.org/Archives/Public/www-rdf-logic/2001May/0392.html

[5] http://lists.w3.org/Archives/Public/w3c-rdfcore-wg/2001May/



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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 Friday, 1 June 2001 09:52:40 EDT

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