[Pellet-users] question about query language

[Vincent Wolowski]

Dear Kendall Clark,

thank you very much for your answer and explanations!
It clarified a lot!

Best regards,
Vincent


On 10/24/07, Kendall Clark <kendall at clarkparsia.com> wrote:
> On Wed, 2007-10-24 at 14:23 +0200, Vincent Wolowski wrote:
> > Hello all,
> >
> > I think Pellet allows to query ontologies only through SPARQL.
> > Are there any plans to support OWL-QL as well?
>
> There aren't any plans to do that at the present time.
>
> > This is not directly related to Pellet, but I would be thankful if
> > someone could explain.
> > Is  SPARQL also considered as a (full) OWL query language or will
> > there be a separate W3C standard similar to OWL-QL?
>
> SPARQL is not, really, as presently specified a full OWL query language,
> or, at least, it's not a query language that respects OWL DL semantics.
>
> Two FAQs are semi-relevant:
>
> http://pellet.owldl.com/faq/how-can-i-answer-sparql-queries-with-pellet/
> http://pellet.owldl.com/faq/what-is-an-abox-query/
>
> We do have plans to support SPARQL-DL, a set of extensions to SPARQL
> that do respect OWL DL semantics, in Pellet.
>
> There's a SPARQL-DL paper:
>
> http://pellet.owldl.com/papers/sirin07sparqldl.pdf
>
> Petr Kremen, an intern working with us this fall, is working on
> SPARQL-DL engine for Pellet. We have another intern starting in January
> who will work on it as well, including optimizations that Petr doesn't
> have time for.
>
> Look for this codee in a future release of Pellet will include SPARQL-DL
> support.
>
> Finally, there's an OWLED task force on this subject:
>
> http://code.google.com/p/owl1-1/wiki/SparqlOwl
>
> Cheers,
> Kendall Clark
>
>