Hi, I'm having difficulty querying dbpedia using the sparql interface on
http://dbpedia-live.openlinksw.com/sparql I'm requesting the label, abstract and a list of redirects, and approx. 20% of the time I'm just getting the redirects. With an internal instance, running an older snapshot of dbpedia, I'm seeing the same problem for around 1% of queries. In every example I've checked, the dbpedia id is still current. So, here are some examples. Failing on dbpedia-live only Adolf_Hitler Chicago Dora_Bryan Emma_Thompson Ferrari Failing on snapshot only Austriamicrosystems Valery_Gergiev Lady_Rachel_Billington Failing on both G20 Darcy_Edwards This is the query I'm using, where '$lod_id' is one of the strings listed above. SELECT ?label, ?abstract, ?redirect, COUNT(?wikilink) WHERE { { <http://dbpedia.org/resource/$lod_id> <http://dbpedia.org/ property/abstract> ?abstract . FILTER ( langMatches( lang(?abstract), 'en') || ! langMatches (lang(?abstract),'*') ) . <http://dbpedia.org/resource/$lod_id> <http://www.w3.org/2000/01/ rdf-schema#label> ?label . FILTER ( langMatches( lang(?label), 'en') || ! langMatches(lang(? label),'*') ) . } UNION { OPTIONAL { ?redirect <http://dbpedia.org/property/redirect> <http:// dbpedia.org/resource/$lod_id> . OPTIONAL { ?wikilink <http://dbpedia.org/property/wikilink> ? redirect } } } } Can anyone suggest why this might fail for valid entries? TIA Dave Spacey http://www.bbc.co.uk/ This e-mail (and any attachments) is confidential and may contain personal views which are not the views of the BBC unless specifically stated. If you have received it in error, please delete it from your system. Do not use, copy or disclose the information in any way nor act in reliance on it and notify the sender immediately. Please note that the BBC monitors e-mails sent or received. Further communication will signify your consent to this. ------------------------------------------------------------------------------ Throughout its 18-year history, RSA Conference consistently attracts the world's best and brightest in the field, creating opportunities for Conference attendees to learn about information security's most important issues through interactions with peers, luminaries and emerging and established companies. http://p.sf.net/sfu/rsaconf-dev2dev _______________________________________________ Dbpedia-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
