- From: Graham Klyne <Graham.Klyne@Baltimore.com>
- Date: Fri, 01 Jun 2001 14:49:41 +0100
- 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/ ------------------------------------------------------------ Graham Klyne Baltimore Technologies Strategic Research Content Security Group <Graham.Klyne@Baltimore.com> <http://www.mimesweeper.com> <http://www.baltimore.com> ------------------------------------------------------------
Received on Friday, 1 June 2001 09:52:40 UTC