Re: Comments on SPARQL Query Language for RDF (21 July 2005 version)

Dan Connolly wrote (in response to Nokia's comment):

>
>  3) It does not seem possible to extend SPARQL to be
>  used with OWL (primarily, perhaps, because of comment
>  #1 above).

A number of WG members (UMD, Agfa) are succesfully using SPARQL
with OWL.


UMD is not willing to be listed as claiming that we are successfully 
using SPARQL with OWL.
   We are implementing numerous OWL based tools and making them 
coexist with OWL, but that is quite a different thing.   I do not see 
that SPARQL gets us anything more significant in the OWL space than 
the RDF graph queries for data or from the specific graphs that OWL 
represents.  However, that is a long way from "successfully using 
SPARQL with OWL" and, as the SPARQL spec has evolved we have 
considerably scaled back our expectations of the what SPARQL will do 
for us.
  We have continued to support the design of SPARQL because we do a 
significant amount of work with respect to RDF triplestores and we 
very much want to do distributed triple store linking, but we do not 
consider SPARQL to be very useful for OWL as per Nokia's comments.
  -JH
-- 
Professor James Hendler			  Director
Joint Institute for Knowledge Discovery	 	  301-405-2696
UMIACS, Univ of Maryland			  301-314-9734 (Fax)
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