sparql

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Rewrite SPARQL DESCRIBE query as CONSTRUCT

For some reason I can\'t issue DESCRIBE queries using Redland ( librdf.org ), is it possible to rewrite DESCRIBE as a CONSTRUCT QUERY for a given UR开发者_开发知识库I?[详细]

2023-03-11 16:27 分类：问答
Optimization of SPARQL query. [ Estimated execution time exceeds the limit of 1500 (sec) ]

I am trying to run this query on http://dbpedia.org/sparql but I get an error that my query is too expensive. When I run the query trough http://dbpedia.org/snorql/ I get:[详细]

2023-03-11 02:17 分类：问答
DBpedia SPARQL and predicate connection

I\'ve got a problem with the DBpedia SPARQL endpoint because the properties of the properties like the label of rdf:type are not stocked in the endpoint. So when I run this query:[详细]

2023-03-10 00:41 分类：问答
how to extract synonyms from MeSH ontology?

In this level of my work, I need to开发者_运维百科 extract a class synonyms from MeSH ontology.[详细]

2023-03-07 05:02 分类：问答
Sparql Query With Inferencing

i have some rdf & rdfs files and i want to use jena sparql implementation to query it and my code look like :[详细]

2023-03-05 17:30 分类：问答
Counting in SPARQL

Ok so i have this query PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> SELECT DISTINCT (COUNT(?instance) AS ?count) WHERE {[详细]

2023-03-05 16:26 分类：问答
DBPEDIA + SPARQL Selecting films in function of their genre

Is it possible to get the list of films in function of their genre? I 开发者_高级运维tried this:[详细]

2023-03-05 06:22 分类：问答
Retrieving a DBpedia resource by its string name with SPARQL

I am trying to get the resource describing country Romania by the country name with this query: PREFIX foaf: <http://xmlns.com/foaf/0.1/>[详细]

2023-03-04 13:44 分类：问答
OWL and SPARQL mini application

The subject says it all. I need a mini project or application ideas that are related to OWL (some ontology represented in RDF written in OWL/XML) and queried by SPARQL. I need to do this project in my[详细]

2023-03-03 17:52 分类：问答
Run SPARQL Queries on Drupal Nodes

Is there a way to ru开发者_运维问答n SPARQL queries on the RDF generated for certain type of nodes?[详细]

2023-03-03 03:35 分类：问答