- From: Richard Cyganiak <richard@cyganiak.de>
- Date: Tue, 4 Sep 2007 14:01:42 +0200
- To: "Michael Schneider" <schneid@fzi.de>
- Cc: "K-fe bom" <u9x3n_15so@hotmail.com>, <semantic-web@w3.org>
On 4 Sep 2007, at 13:02, Michael Schneider wrote: >> I find that making statements about the URI of the document (in your >> case, the HTML page containing the RDFa) works for me. It isn't >> technically *quite* the same as annotating the named graph, but often >> I find it actually more appropriate to make statements about the >> document, not the graph. > > But what I am unclear about is, what has this approach to do with the > NamedGraphs idea? I interpret a set of documents (e.g. the web) as a set of named graphs. > AFAICS, what you suggest here is just of the form: "Take > some URI, and interprete it in a way that it denotes some RDF > graph, and > then start to make assertions about this resource in the form of RDF > triples." Yes. That's the one-sentence description of named graphs. > This happily maps into the current RDF framework and its model > theoretic semantics. No. Using vanilla RDF without semantic extensions, you cannot record the fact that some triple <a> <b> <c> is in some graph <d>. Named graphs is a minimum semantic extension that lets you do this. Richard > And in practice, if I find in the SemWeb an RDF > description about some URI, which turns out to be an URL of some RDF > document, than it looks pretty natural to me that the given RDF > description > is a description of at least this RDF document. And from this, it > is not a > big step to regard the RDF description to be a description of the > RDF graph > represented by that RDF document. So, it looks to me that I can go > pretty > well with this approach in existing RDF, without introducing some > notion of > a NamedGraph into the RDF framework. Or did I overlook something? > > Cheers, > Michael > > -- > Dipl.-Inform. Michael Schneider > FZI Forschungszentrum Informatik Karlsruhe > Abtl. Information Process Engineering (IPE) > Tel : +49-721-9654-726 > Fax : +49-721-9654-727 > Email: Michael.Schneider@fzi.de > Web : http://www.fzi.de/ipe/eng/mitarbeiter.php?id=555 > > FZI Forschungszentrum Informatik an der Universität Karlsruhe > Haid-und-Neu-Str. 10-14, D-76131 Karlsruhe > Tel.: +49-721-9654-0, Fax: +49-721-9654-959 > Stiftung des bürgerlichen Rechts > Az: 14-0563.1 Regierungspräsidium Karlsruhe > Vorstand: Rüdiger Dillmann, Michael Flor, Jivka Ovtcharova, Rudi > Studer > Vorsitzender des Kuratoriums: Ministerialdirigent Günther Leßnerkraus >
Received on Tuesday, 4 September 2007 12:01:59 UTC