First of all, thanks for the prompt reply!
On Thursday, April 07, 2011 9:36 AM [GMT+1=CET], Bijan Parsia <[email protected]> wrote (with possible deletions): > Quick answer from memory as I'm prepping a lecture. > > On 6 Apr 2011, at 13:15, Thorsten Möller wrote: > >> Hi all, >> >> I tried to find information about the relationship between using >> SPARQL under the SPARQL OWL 2 Direct Semantics Entailment Regime [1] >> and SPARQL-DL [2], in terms of expressive power and their semantics. >> As far as I can see they seem to be quite similar, > > Yep. > >> both syntactically and in terms of semantic entailment. > > Yep. Main differences will show up in BNode and Datatype handling. > SPARQL/OWL2 also disallows non-distinguished variables. I know that SPARQL/OWL2 is in draft state, so things may change. Still, could you detail this, please, especially the datatype handling. Also, the SPARQL-DL paper states that bnodes in the query (as well as the underlying RDF graph?) are treated as non-distinguished variables. Is that different for SPARQL/OWL2; does it refer to Skolemization. The difference is still not entirely clear to me. Thanks again, Thorsten
