Get Help

Feed "answers.semanticweb.com"

April 14, 2016

When youre wisdom las vegas teeth whitening dentist are getting taken out does it hurt?

March 22, 2016

How can I use a class/resource and properties of dbpedia using protege ontology?

March 12, 2016

How can i get flag image from dbpedia?

Feed "stackoverflow.com"

June 30, 2016

I read about the DBpedia NLP datasets and I’m very excited to try them. The only bad thing is that I cannot download them: when I dereference the links provided in http://wiki.dbpedia.org/services-resources/datasets/nlp unfortunately I get a 404 response. The URL I requested are...

June 29, 2016

I am trying to get a dataset that gives me all the great data generally available in a city's climate table but I'm having some trouble.

I was able to get this to work and felt pretty good about myself. In my understanding, when I plug this in on dbpedia's...

June 23, 2016

I am a novice in Semantic Web and I would like to retrieve all property-value pairs of "apple" from DBPedia using SPARQL query. Below I have written the query in http://dbpedia.org/sparql editor, but it returns no any results.Could you tell me where I make a mistake, please?

PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>...

June 22, 2016

I'm trying to filter by datatype in DBpedia. For example:

SELECT * WHERE {?s ?p ?o . FILTER ( datatype(?o) = xsd:integer) } LIMIT 10

But I get no results, while there are certainly integer values. I get the same from other endpoints using Virtuoso, but I do get results from alternative endpoints. What could be the problem? If Virtuoso does not implement this SPARQL...

June 21, 2016

I have a query that gets some objects and attributes. For example

PREFIX rdf:<http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#> SELECT DISTINCT * { ?company a <http://dbpedia.org/ontology/Company> . OPTIONAL { ?company <http://dbpedia.org/ontology/industry> ?industry . } OPTIONAL { ?company <http://dbpedia....

June 20, 2016

Can any one help me to explain in a simple way how to query data from Dbpedia using SPARQL all the articles on internet explain how to write SPARQL query but I have a good knowledge in SQL so I just I did not understand how to call Dbpedia properties like rdf:label or owl and the other properties

June 20, 2016

I am using DBpedia endpoint using Jena. I am sending SPARQL query to retrieve the objects and predicates of an object (say for example, http://dbpedia.org/page/London). How to get the following two result sets:-

  1. All predicates and objects of London in labels as shown here (...

June 17, 2016

dbpedia.org is down about 24 hours (may be more) due a hardware problem. Does any DBPedia online mirror exist with SPARQL endpoint? (with possibility to save the query results)

June 14, 2016

I would like to query on DBPedia using Java. Below is my code and it does not return corrrect result.I want to get Abstract part from [http://dbpedia.org/page/Ibuprofen page and label name. but it returns only http://dbpedia.org/resource/Ibuprofen 11 times. If...

June 12, 2016

I've set up a local Dbpedia mirror - individual queries work just fine but I'm getting the following errors from Virtuoso when I try a higher amount of queries:

17:45:46 WARNING: * Monitor: System is under high load. Adding cluster nodes or using more replicated copies may needed 17:47:03 WARNING: * Monitor: Locks are held for a long time 17:47:40 WARNING: * Monitor: No Web Server threads...