- From: Dan Brickley <danbri@danbri.org>
- Date: Wed, 15 Apr 2009 14:53:31 +0200
- To: Mark Wallace <mwallace@3SigmaResearch.com>
- CC: Semantic Web at W3C <semantic-web@w3.org>
On 15/4/09 14:41, Mark Wallace wrote: > Hi all, > > In my experience (it may be too limited) I see a lot of "real RDF" on > the web, especially in things like FOAF, and Dbpedia. But I am not aware > of much "real OWL" on the web, and by this I mean OWL-DL ontologies and > knowledge bases, embedded in web pages, and systems that reason over > such information. Now I know many folks are hosting ontologies at HTTP > URLs. This is not what I am talking about. I am thinking more of OWL-DL > statements out there like FOAF is now, and systems that crawl (?) and > reason over the combined knowledge. A quick comment - Whenever people do identity reasoning with FOAF data (eg. Sindice, Garlik/Qdos) this is reasoning using properties like foaf:homepage, foaf:mbox etc whose semantics are documented using (real!) OWL. Whether or not a general purpose OWL inference engine is used at runtime is pretty secondary. OWL is a data formats standard, just as RDF is - how you compute with that data is a pragmatic choice. Any vocabulary or dataset (eg. DOAP, SIOC) that is mixed up with FOAF in terms of linked classes and properties, is also partially documented using OWL. So I guess I disagree with any attempt to contrast "real world" FOAF / RDF deployment with "non-real" OWL deployment. Or with the idea that the only real OWL work is OWL-DL... cheers, Dan -- http://danbri.org/
Received on Wednesday, 15 April 2009 12:54:11 UTC