Re: practical question on naming graphs

On 15.05.2011 20:53, Henry Story wrote:
> Has the W3c or anyone put together a practical guide on how to name
graphs yet?

This would be useful. As far as I know the problem may be not only
naming but also semantics, see the following thread:
http://lists.w3.org/Archives/Public/semantic-web/2009Oct/thread.html#msg39

i.e. named graphs should be thought of as "graph literals" - if a graph
changes it should get a new name. And by named graphs I'm referring to
the paper by J. Carroll, C. Bizer, P. Hayes, P. Stickler.

Jakub


>
> What should the graph names of some well known ontologies be? Assuming
to start off
> with that we don't want to explore issues of temporal graph names or
names of graphs
> where the idenity of the requestor has been made available.
>
>
> For foaf should it be:
>
>  +  http://xmlns.com/foaf/0.1/
>  +  http://xmlns.com/foaf/spec/ <- all foaf terms are redirected here
with 303
>  +  http://xmlns.com/foaf/0.1/knows -> redirects with 303 to spec
>
> Should owl be:
>
>  + http://www.w3.org/2002/07/owl
>  + http://www.w3.org/2002/07/owl.rdf <- Content-Location but 200
>
> Sould DC be:
>
>   + http://purl.org/dc/elements/1.1/
>   + http://dublincore.org/2010/10/11/dcelements.rdf <- 302 Moved
Temporarily
>
> One answer may simply be both! That is in a SPARQL query
>
> SELECT ?clazz
> FROM <http://xmlns.com/foaf/0.1/>
> WHERE { ?class a owl:Class }
>
> SELECT ?clazz
> FROM <http://xmlns.com/foaf/spec/>
> WHERE { ?class a owl:Class }
>
> should both return the same answers. The server serving the answers
should do a GET or look up the information in a database that keeps
track of redirects.
>
> Note: for foaf type naming systems I suppose that means that it will
take quite a few partial GETs one for each relation or class type, to
GET all the initial 303 redirects before one really captures all the
named graphs foaf can have.
>
> Sorry to bring this up. I am sure it's been debated for ever already.
If it has please just point me to the answer. :-)
>
> Thanks,
>
> Henry
>
> Social Web Architect
> http://bblfish.net/
>
>
>

Received on Sunday, 15 May 2011 19:13:58 UTC