- From: Richard Cyganiak <richard@cyganiak.de>
- Date: Sun, 2 Oct 2011 13:18:41 +0100
- To: Sandro Hawke <sandro@w3.org>
- Cc: Pierre-Antoine Champin <pierre-antoine.champin@liris.cnrs.fr>, "public-rdf-wg@w3.org" <public-rdf-wg@w3.org>
On 1 Oct 2011, at 22:59, Sandro Hawke wrote: > So let's say we we have a concept of a semantic web home page > for a person. We decide on the policy that if someone's home > page says that they are a vegetarian, then we believe that they > are a vegetarian. … > It's not immediately obvious to me how to do this kind of stuff with > named graphs Named graphs were invented for exactly this kind of stuff. See for example the WIQA Policy Framework, which allows writing down this kind of trust policy in a SPARQL-like syntax: http://richard.cyganiak.de/2008/papers/wiqa-jws2009.pdf TriG was developed in the context of this work. > Perhaps we can show it with SPARQL? Query for all the people whose home pages say they are > vegetarians? I think Eric addressed this nicely. Best, Richard
Received on Sunday, 2 October 2011 12:19:12 UTC