Hello Antonio,
OWLIM-Lite does all of its inference at load time.
For the purpose of query-answering, it is possible to use all statements
as input or just explicit statements as input.
There is an 'includeInferred' parameter in many places in the Sesame
API, e.g.
TupleQuery q =
respositoryConnection.prepareTupleQuery(QueryLanguage.SPARQL, query);
q.setIncludeInferred(false);
TupleQueryResult results = q.evaluate();
If you are using a UI, such as the Sesame workbench, then you can just
uncheck the 'include inferred' checkbox.
I hope this helps,
barry
On 13/09/12 13:55, antonio nunziante wrote:
OK, thank you.
However, is it a way to execute a sparql query turning off the inference?
Thanks again
-Antonio
2012/9/13 Barry Bishop <[email protected]
<mailto:[email protected]>>
Hi Antonio,
Please see the response here:
http://answers.semanticweb.com/questions/18659/improve-performance-insertupdate-owlim-lite
Regards,
barry
Barry Bishop
OWLIM Product Manager
Ontotext AD
Tel: +43 650 2000 237
email:[email protected] <mailto:[email protected]>
skype: bazbishop
www.ontotext.com <http://www.ontotext.com>
On 13/09/12 07:22, antonio nunziante wrote:
Hi all,
I have a problem with performances especially in INSERT and
DELETE/INSERT query sparql.
I have implemented an ontological model with the following
characteristics:
OWL Profile = OWL 2 QL
DL Expressivity = ALCH(D)
Axioms = 719
Logical Axioms = 487
GCI Axioms = 0
Individuals = 0
Classes = 39
Object Properties = 54
Data Properties = 24
Annotation Properties = 4
I create an OWLim-Lite repository in openrdf-workbench (I have
already installed owlim-lite-4.3.4238) on Tomcat 7 and I reserved
4GB to Tomcat.
With few instances every SPARQL query works, but now into the
store there are more or less 64000 statements and INSERT and
DELETE/INSERT needs to much time (I need to interface the
semantic repository with a web application).
How can I improve performances?
Thanks in advance
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/Antonio Nunziante/
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