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From Reto Bachmann-Gmür>
Subject ConceptProvider, any suceess accessing dbpedia?
Date Fri, 23 Sep 2011 08:22:49 GMT

I was comparing the stanbol dbpedia integration with what we have in

the default sparql-query in the form when adding a new concept-provider is
designed to work with DBpedia. However I had no success adding as sparql endpoint. I'm constantly getting
time-out errors as shown above.

Did anyone managed to get concept-provider working with DBpedia? Maybe the
query could be simplified to be more performant.


Transcript of interaction with dbpedia after accessing

POST /sparql HTTP/1.1
Accept: application/rdf+xml
Cache-Control: no-cache
Pragma: no-cache
User-Agent: Java/1.6.0_26
Connection: keep-alive
Content-type: application/x-www-form-urlencoded
Content-Length: 721
500 SPARQL Request Failed
Date: Fri, 23 Sep 2011 08:12:57 GMT
Content-Type: text/plain
Connection: keep-alive
Server: Virtuoso/06.02.3130 (Linux) x86_64-generic-linux-glibc25-64  VDB
Accept-Ranges: bytes
Content-Length: 596

Virtuoso S1T00 Error SR171: Transaction timed out

SPARQL query:
PREFIX owl: <>
PREFIX rdfs: <>
PREFIX skos08: <>
PREFIX skos04: <>
CONSTRUCT { ?concept a skos08:Concept; skos08:prefLabel ?prefLabel;
rdfs:comment ?comment; owl:sameAs ?sameConcept . }
WHERE { ?concept a skos04:Concept; skos04:prefLabel ?prefLabel .
OPTIONAL { ?concept rdfs:comment ?comment . }
OPTIONAL { ?concept owl:sameAs ?sameConcept . }
FILTER (REGEX(STR(?prefLabel), 'rdf', 'i'))}

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