sparql

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Documentation for the TWINKLE SPARQL query engine

I have a problem with a SPARQL query engine called \"TWINKLE\" . Although i found the executible file and it was working perfectly , I failed to find any manual on the net about the usage of TWINKLE.[详细]

2023-01-03 23:55 分类：问答
how to get individual(s) for given class/individual with given object property using SPARQL

I have simple ontology called \"campus.owl\".There is a class called\"Lecturer\" and which has two sub classes ,RegularLecturer and VisitingLecturer.There is a another class called \"Student\" which i[详细]

2023-01-03 15:16 分类：问答
How to get object properties of specific class in SPARQL

I have some ontology (campus.owl). There are tree classes (Student, Sport, Lecturer). Student class is joined with Lecturer class using \"has\" object property and Student class joined with Sport clas[详细]

2023-01-03 04:27 分类：问答
Jena ontology API

I\'m new to Jena and Protégé.I did some stuff with these. I have some problems: Do I need to use SPARQL query to get the ontology classes, subclasses, properties, and values, or can I do it with O[详细]

2023-01-02 21:05 分类：问答
Jena Sparql and construct

CONSTRUCT is an alternative SPARQL result clause to SELECT. Instead of returning a table of result values, CONSTRUCT returns an RDF graph.For instance, running this query in the following Java code pr[详细]

2023-01-02 13:47 分类：问答
Linked data and endpoint

Why does the end point matters so much to the end results of the query. For this query: SELECT ?episode,?chalkboard_gag WHERE {[详细]

2023-01-01 17:10 分类：问答
multilingual sparql

I want to query a triple store 开发者_如何学编程which is multilingual. Query that works: SELECT * WHERE {?s ?p \"sdfsdf\"@en}[详细]

2022-12-31 05:22 分类：问答
using union in a construct sparql query

I have an rdf graph with several entries. Now I want to get all related triples to a gi开发者_开发百科ven id. This is my sparql query:[详细]

2022-12-28 09:07 分类：问答
Jena result in UTF-8 format

How can I get in Jena (Java language) result in UTF-8 format? My code: Query query= QueryFactory.create(queryString);[详细]

2022-12-27 06:44 分类：问答
How to match exact string literals in SPARQL?

I have this query. It matches anything which has \"South\" in its name. But I only want the one whose foaf:name is exactly \"South\".[详细]

2022-12-25 17:59 分类：问答