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

From: Dan Connolly <connolly@w3.org>
Date: Fri, 02 Sep 2005 10:12:08 -0500
To: Jim Hendler <hendler@cs.umd.edu>
Cc: public-rdf-dawg-comments@w3.org
Message-Id: <1125673929.16011.768.camel@dirk>

On Fri, 2005-09-02 at 10:37 -0400, Jim Hendler wrote:
> 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.

Ooops. Sorry. I clearly got the wrong impression.
Thanks for clarifying.

>   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)
> College Park, MD 20742
> http://www.cs.umd.edu/users/~hendler 
Dan Connolly, W3C http://www.w3.org/People/Connolly/
D3C2 887B 0F92 6005 C541  0875 0F91 96DE 6E52 C29E
Received on Friday, 2 September 2005 15:12:20 UTC

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