Dbpedia Ontology and live

Hi,

We’ve noticed that the types for an entity does not include the Dbpedia ontology when queried via the ‘live.dbpedia.org’ Sparql endpoint, only if we query ‘dbpedia.org’ ? Why is this?

Regards
Chris

Hi @chris.rafferty

DBpedia.org uses a static ontology which is dumped together with the dataset.

Live.dbpedia.org gets the ontology as part of the live extraction scheme which seems to have some differences in generating the ontology triples.

I will check with the Live development team to see what could be wrong here and report back to you.

Patrick

Hi Patrick,

Did you get any response from the Live development team?

Regards
Chris

@chris.rafferty I am unsure how to test this. The types are different per se. The main endpoint has data from 2017 and will be updated in snapshots. Live is continuous and reflects the mappings and the changes in Wikipedia.

Could you be more concrete, e.g. give a SPARQL query, examples or statistics? Because I can not estimate whether it is an error or system inherent.

Hi,

Sure, however there is a restriction on the number of links, myself as a new user, can post. So here’s the query with the resource link missing. I’ll follow-up with a couple of examples to substitute in, the query does not produce results on live.dbpedia.org/sparql

PREFIX ont: http://dbpedia.org/ontology/
SELECT ?type
WHERE {
PUT RESOURCE LINK HERE a+ ?type
filter (strstarts(str(?type),str(ont:)))
}

Regards

Chris

Here’s the examples:

http://dbpedia.org/resource/London
http://dbpedia.org/resource/HMS_Hood