On 10/17/10 3:23 PM, Mauricio Chicalski wrote:
ok the extra results are because the graph uri... =]
but what can explain the opencyc concepts in the results if they
doesnt have any subclass? something wrong with the query?
On Sun, Oct 17, 2010 at 4:28 PM, Mauricio Chicalski
<[email protected] <mailto:[email protected]>> wrote:
Hi all,
I was wondering whats happening..
the following query returns only yago (root classes) when executed
with the browser (firefox)..
but when running the query with the jena sparql service... it also
returns opencyc concepts and some others (including "classes" that
apparently doesnt have subclasses)..
CONSTRUCT {
?y <http://www.w3.org/2000/01/rdf-schema#label> ?label
} WHERE {
?sub <http://www.w3.org/2000/01/rdf-schema#subClassOf> ?y .
?y <http://www.w3.org/2000/01/rdf-schema#label> ?label .
OPTIONAL {?y <http://www.w3.org/2000/01/rdf-schema#subClassOf>
?super} . filter(!bound(?super))}
by the way.. if I also Include in the construct clause the
subclasses of ?y.. ?sub
<http://www.w3.org/2000/01/rdf-schema#subClassOf> ?y
then jena cant parse the resulting xml... invalid chars..
CONSTRUCT {
?y <http://www.w3.org/2000/01/rdf-schema#label> ?label .
?sub <http://www.w3.org/2000/01/rdf-schema#subClassOf> ?y
} WHERE {
?sub <http://www.w3.org/2000/01/rdf-schema#subClassOf> ?y .
?y <http://www.w3.org/2000/01/rdf-schema#label> ?label .
OPTIONAL {?y <http://www.w3.org/2000/01/rdf-schema#subClassOf>
?super} . filter(!bound(?super))}
thanks for attention...
If you don't scope your query a specific Named Graph using the Graph
IRI: <http://dbpedia.org>, your queries will be scoped to the entire
Virtuoso Quad Store (which hosts a number of Named Graphs per instance).
We have a number of ontologies loaded into the Virtuoso instance that
host the public DBpedia SPARQL endpoint. This enables people to perform
sophisticated reasoning over DBpedia using a broad collection of
ontologies that include: OpenCyc, Yago, UMBEL, SUMO, FAO etc...
Kingsley
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