Hi everyone,
for my thesis I compare different technologies to realize constraint
checking for ontologies.
I am currently interested between the difference between SPARQL and
SWRL/SQWRL.
In the FAQ (http://spinrdf.org/faq.html) it is said that " SPIN is more
expressive than SWRL, because SPARQL has various features such as UNIONs
and FILTER expressions"
In the Protege Mailinglist, the opposite is affirmed.
(https://mailman.stanford.edu/pipermail/protege-owl/2009-September/012148.html)
"SPARQL can be used to query OWL ontologies if they are serialized as
RDF triples but has no understanding of the semantics associated/ /with
those triples/."
/Martin O'Connor gives an example that can be expressed in SQWRL but not
in SPARQL.
Now, I am lost. Is there a good reference for the comparison between
SPARQL/SWRL/SQWRL ?
Have you an example for the statement, that SPARQL is more expressive
than SWRL ?
Thanks a lot.
Rita
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