- From: Jonathan Borden <jonathan@openhealth.org>
- Date: Thu, 8 Aug 2002 16:17:18 -0400
- To: "Bullard, Claude L \(Len\)" <clbullar@ingr.com>, "'Bill de hOra'" <dehora@eircom.net>, "'Tim Berners-Lee'" <timbl@w3.org>
- Cc: <www-tag@w3.org>, "pat hayes" <phayes@ai.uwf.edu>
Bullard, Claude L (Len) wrote: > I agree although one might want to ensure the understanding > it is possible to use other means of representing the interpretive expression. > Otherwise: > > "... meaning is created within semiosis and, as I have argued, semiosis and evolution are identical in this context. Meaning is created whenever a sign and an object is merged together and the relation is maintained by an interpretant." > > http://www.library.utoronto.ca/see/SEED/Vol1-2/Thellefsen.htm > I was explicit to say that the meaning of a URI was defined by the RDF graph, or by an OWL 'ontology' at the URI, when the media type was: _application/rdf+xml_ (.. or for example application/owl+rdf+xml if some sort of RDF subsetting were ever to come into effect...) Pat Hayes and Guha have proposed a framework to represent various model theories for semantic web languages (Lbase), and this at first look, seems to be an excellent start toward a coherent framework for integrating various 'meanings' on the Web. I've briefly looked at your reference (above) but don't immediately understand the implications for 'semiotics' and the Semantic Web, or the current Web, but perhaps such a semantics might apply given a specific media type and as such if the semantics can be developed as an extension of Lbase, then it might apply to a given media type (or set of types). In terms of the web architecture, it seems reasonable that at least for a given set of media types, that the meaning of the _resource_ identified by an HTTP URI is defined according to the range of interpretations defined by a specific type of representation referenced by the URI. That's a mouthful, but it means that for a URI which represents itself as application/rdf+xml, the meaning is defined according to http://www.w3.org/TR/rdf-mt/ . RDDL already says essentially this (at least IMHO): for namespace names which resolve to a RDDL document, the namespace is defined according to RDDL. RDDL is readily xslt'd into RDF, so one could define the meaning of such a namespace URI as the RDF meaning of the graph obtained by transforming RDDL -> RDF. Jonathan
Received on Thursday, 8 August 2002 16:23:49 UTC