- From: Charles McCathieNevile <charles@sidar.org>
- Date: 2005年5月09日 13:18:41 +0200
- To: "Jeen Broekstra" <jeen@aduna.biz>, "conor dowling" <conor@the325project.org>
- Cc: semantic-web@w3.org
- Message-ID: <op.sqh9pfw0w5l938@pc048.qadoc.oslo.opera.com>
On 2005年5月09日 12:57:16 +0200, Jeen Broekstra <jeen@aduna.biz> wrote: Conor had asked >> 3) Types - just like any other predicate? >> SELECT * >> WHERE { ?subject rdf:type ?type } >> will give me all of the types of all of the resources - right? > Yes. Although you should keep in mind that SPARQL itself makes no > guarantees as to how much of the RDF(S) semantics is used. That is up > to the implementation. So a very naive SPARQL implementation will only > return the types of the resources for which this type is explicitly > defined in the data, other implementations, that do RDF(S) inferencing > will return all types for all resources. So is there any standard way of asking a SPARQL implementation whether it does RDFS sub* inferencing? cheers Chaals -- Charles McCathieNevile Fundacion Sidar charles@sidar.org +61 409 134 136 http://www.sidar.org
Received on Monday, 9 May 2005 11:17:44 UTC