Leyla Jael García Castro wrote:
Hello Hugh,
I was reading the referenced page by Benjamin
(http://docs.openlinksw.com/virtuoso/rdfsparqlrule.html). If subclass
inference is supported, it means I could query
SELECT ?sub
WHERE {?sub a :Animal . ?sub :hasWings ?obj}
And then I would get any sub which is an Animal or any subclass (Bird,
Dog, Cat, etc.) and which is related to obj through the predicate
hasWings?
Would it work if I try it with your demo EndPoint? I tried sometime a
similar query and it only retrieved sub belonging to Animal class but
to Bird, for instance. What am I missing?
You need the Transitive Option (V6 and higher required) for Subsumption.
Links:
1.
http://docs.openlinksw.com:80/virtuoso/rdfsparql.html#rdfsparqlimplementatiotransexamples5
Kingsley
Best,
LG
*Von:* Hugh Williams [mailto:[email protected]]
*Gesendet:* Donnerstag, 7. Januar 2010 03:33
*An:* Benjamin Großmann
*Cc:* [email protected]
*Betreff:* Re: [Virtuoso-users] Inference via Web Interface?
Hi Benjamin
By "web interface" I presume you mean the SPARQL endpoint (ie
http://<your-hostname>/sparql), as I would expect this to work pretty
much the same as with isql, with the exception that the query is not
prepended with the "sparql" keyword ?
Please provide more details on what exactly is failing for you ...
Best Regards
Hugh Williams
Professional Services
OpenLink Software
Web: http://www.openlinksw.com
Support: http://support.openlinksw.com
Forums: http://boards.openlinksw.com/support
Twitter: http://twitter.com/OpenLink
On 6 Jan 2010, at 13:24, Benjamin Großmann wrote:
Hi,
I want to use virtuoso’s inferencing feature described at
http://docs.openlinksw.com/virtuoso/rdfsparqlrule.html
On a demo dataset I could successfully inference rdfs:subClassOf
statements in isql.
I would like to know, if it’s possible to use it in SPARQL queries via
web interface.
The “define input:inference …” statement doesn’t seem to work here.
Thanks in advance,
Benjamin
--------------------------------
Benjamin Grossmann
neofonie GmbH
Robert-Koch-Platz 4
10115 Berlin
fon: +49.30 24627 100
fax: +49.30 24627 120
[email protected]
http://www.neofonie.de
Handelsregister
Berlin-Charlottenburg: HRB 67460
Geschaeftsfuehrung
Helmut Hoffer von Ankershoffen
(Sprecher der Geschaeftsfuehrung)
Nurhan Yildirim
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