- From: Enrico Franconi <franconi@inf.unibz.it>
- Date: Wed, 25 Jan 2006 18:58:20 +0100
- To: Andy Seaborne <andy.seaborne@hp.com>
- Cc: RDF Data Access Working Group <public-rdf-dawg@w3.org>
On 25 Jan 2006, at 18:55, Enrico Franconi wrote: > > On 25 Jan 2006, at 18:41, Seaborne, Andy wrote: >> Enrico Franconi wrote: >>> Another proposed simplification: >>> Currently: >>> Definition: Scoping Set >>> A Scoping Set B is a set of RDF terms formed by the combination of: >>> * all URIs >>> * blank node names >>> This could just be: >>> A Scoping Set is an arbitrary subset of the RDF terms. >> >> I thought the point was that it is always all IRIs (oops s/URI/ >> IRI) and some set of blank nodes (but not all of them). That then >> ties to "The identifiers introduced by S all occur in B." in the >> BGP matching defn. > > Well, yes, you are right. More precisely: in sparql we have all the B includes only the bnodes in G'; then, we have to leave room for future extensions. For example, for OWL data queries, B does not include any bnode; and there is an understanding of RDF entailment where you may want to have all bnodes in B. --e.
Received on Wednesday, 25 January 2006 17:59:31 UTC