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April 25, 2017

I am trying to get list of all the authors who have had 3 or more piece of work done (in DBpedia).

my example can be run on : http://dbpedia.org/sparql

base code select (count(?work) as ?totalWork), ?author Where { ?work dbo:author ?author. } GROUP BY ?author

I get each authors total amount of piece of work...

April 25, 2017

I am using the following query

PREFIX dct: <http://purl.org/dc/terms/> SELECT ?subject WHERE { ?concept rdfs:label 'Exoskeleton'@en ; ^dct:subject ?subject . } ORDER BY ?subject

This doesn't give me any results. However, the rdfs:label exists : http://dbpedia.org/page/Exoskeleton...

April 24, 2017

I'm dealing with a problem that I can't execute the same query from DBpedia (see Example below) multiple times, because the execution freezes after like 4-5 queries.

The thing is, with the same Apache Jena Code I can execute hundreds of same queries from Wikidata (see Example below) without a problem. The Apache Jena Code is literally standard code (see below). The result is just...

April 24, 2017

I want write a quey in SPARQL in which if we provide any input name, query result will tell, whether it is a film title or not. For example

select distinct ?type where { <http://dbpedia.org/resource/Inception> a ?type . FILTER regex(str(?type), "^.*movie", "i") }

query result tells us that it is a movie. Now when we enter those name having ambiguities it will return nothing....

April 23, 2017

I am trying to run the following sparql query :

PREFIX dct: <http://purl.org/dc/terms/> select distinct ?subject where { ?concept rdfs:label 'Artificial intelligence'@en . ?concept ^dct:subject ?subject . } LIMIT 100

When I run this on dbpedia's public server, I get the following results :...

April 17, 2017

If I make an HTTP GET request on DBpedia on a resource say <http://dbpedia.org/resource/Paris> with content-type text/turtle,application/rdf+xml,text/ntriples,application/ld+json, I get the HTML content of the page http://dbpedia.org/page/Paris.

Well, I do understand that DBpedia is performing a redirection to...

April 14, 2017

Is there any Database which contain the taxonomy of programming languages?? I found the dbpedia link http://dbpedia.org/ontology/programmingLanguage. But I am not getting how to use that dbpedia information.

April 12, 2017

In dbpedia for some languages we have some datasets such as mappingbased properties, instance types and disambiguations unredirected, what about other data sources?is there any other knowledge bases that provide these three types of data sets for me?

April 12, 2017

I am new to DBPedia SPARQL Query, I am currently using the http://dbpedia.org/snorql to test queries.

My query looks like this

SELECT ?name ?school ?person WHERE { ?person dbo:almaMater :Harvard_University . ?person foaf:name ?name . ?person dbo:birthDate ?birth . ?person dbo:country ?country...