rdf

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What does "reify" and "reification" mean in relation to RDF?

I do think I understand the meaning of these words in programming languages, but it is not clear in regards to RDF and triples.Is there an example that w开发者_开发技巧ill help me to understand?[详细]

2023-02-26 06:46 分类：问答
Convert String to model or Statement in jena using Java program?

I made a program for RDF by using jena in java... I have to return the result in string format.. and then in other function i have to get it as a string format and convert it to either model or statem[详细]

2023-02-26 00:38 分类：问答
SPARQL Select two columns

I\'m new to SPARQL and I\'m trying to select two or more data properties f开发者_如何学Pythonrom entity.[详细]

2023-02-26 00:01 分类：问答
Protege - Specifying primary key and foregin key for RDF file

Using protege, I am cr开发者_高级运维eating RDF file. Now I want to know to how to specify an slot is an primary and foreign keys to the given classes? Thanks in advanceFor a primary key you have to h[详细]

2023-02-25 06:35 分类：问答
How to extract RDF triples from XML file using an existing ontology?

I am trying to extract RDF triples from XML files by using an existing开发者_开发技巧 ontology. I am using Java, and can use XPath to extract data from XML and Jena to read and write RDF documents and[详细]

2023-02-25 03:04 分类：问答
how to parse big datasets using RDFLib?

I\'m trying to parse several big graphs with RDFLib 3.0, apparently it handles first one and dies on the second (MemoryError)... looks like MySQL is not supported as store anymore, can you please sugg[详细]

2023-02-24 22:25 分类：问答
Ontology similar to PeriodicTable for integrated search

I am developing an application that queries PeriodicTable ontology. Is 开发者_如何学Gothere some other ontology similar to this that can be queried with it? Basically, I am in search of ontology that[详细]

2023-02-24 09:22 分类：问答
how I can use sparql to query from my own rdf file using dotNetRDF library?

I use dotNetRDF library to write sparql queries. I Define a remote endpoint using \"http://dbpedia.org/sparql\" as DBPedia SPARQL endpoint and \"http://dbpedia.org\" as Default Graph URI:[详细]

2023-02-24 06:14 分类：问答
what means the use of a Triplestore

the use of a triplestore means that we are going to use a database that have a table with开发者_JS百科 3 coluns and 7 indexes?[详细]

2023-02-22 18:35 分类：问答
What is the persistent model of garlik 4store

I need to know how 4开发者_如何学运维store make the persistence of it\'s triples in the database, if it\'s like a table of 3 columns, one for each element in the triple or if it\'s another wayIt\'s so[详细]

2023-02-21 23:40 分类：问答