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, RichardReceived on Sunday, 2 October 2011 12:19:12 UTC
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