Hi Aziza,
In SPARQL 1.1, there is NOT EXISTS and MINUS. In SPARQL 1.0 the usual construct
for negation is
OPTIONAL {
?s ?p ?o
}
FILTER !bound(?o)
All of these features are of course also available in SPIN.
I am not sure what you mean with controlled execution - could you clarify?
It may be more fruitful for you to ask SWRL related questions on some SWRL
mailing list.
Regards,
Holger
On Apr 3, 2011, at 3:41 PM, aziza wrote:
> Hi,
> just wondering how to do negation and controlled execution in SPIN and
> SWRL?
> Thanks, Aziza
>
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