In an ontology, suppose we have a class named "function" it has two instances "func1" and "func2" and suppose that the class has a data property "d". ...

Can please someone explain about now(?x) Builtin primitive in jena rule. I need to understand about this but not found resource on internet. Like exam ...

I'm currently working on some small examples about Apache Jena. What I want to show is universal quantification. Let's say I have balls that each ha ...

May I know if Apahe JENA supports OWL 2 syntax in Java? It does mentioned that in the documentation (https://jena.apache.org/documentation/ontology/) ...

No data available in table, when I customize the rules of JENA FUSEKI? movies.ttl is the rdf:type owl:Ontology. And rules.ttl is my custom rul ...

just like how Jena works in reasoning?or some relevant papers in rule-based reasoning?Thank U very much. ...

I have a RDF dataset and a some OCL files which discribe the expected shape of the data. Is there a way verify the data with the OCL files with Jena? ...

I have a semantic network. Is it possible to use a jena framework to create a new object in the semantic web based on some rule. For example there is ...

I try to add a bit of ontology to a (public) RDF dataset (wordnet), specifically I need to differentiate between LexicalEntries for Verbs and Nouns, s ...

I have a question. I have a Jena rule like this: The problem is that the rule above does not update the value of "hasPhone" property, but it adds o ...

Here is my code: On executing playingWithJenaReasoner() function it throws error: com.hp.hpl.jena.reasoner.rulesys.Rule$ParserException: Expected ' ...

I have a quiz game in which students have to solve questions from three categories like Chemistry, English, Physics. Students will score points in the ...

I tried to connect Jena to my custom file which I stored on a public directory on Dropbox with the following link https://www.dropbox.com/s/d3gfidqqfw ...

I have a questions regarding to the Jena API. I wrote some rules that are working perfectly but with one thing I still have a problem. I hope you can ...

In apache jena (using rules), how do I print when finding an instance that does not have a specified object property (in a single rule)? Example (pri ...

I am working with Jena SPARQL API, and I want to execute queries on my RDF files after applying inference rules. I created a .rul file that contains a ...

I want to use knowledge, which is modelled between classes. E.g. I have modelled a car and a bus have 4 wheels, a bike 2 wheels. Now, I want to expres ...

I have a Jena Model filled with statements and use a GenericRuleReasoner with custom rule strings as follow (Example directly taken from Jena tutorial ...

What is an easy way to create multiple skolems without copying the rule multiple times? The output is: I want to have five childens. Is here cou ...

I succeeded in creating, modifying, merging ontologies with Jena API and Eclipse. I succeeded also in starting the OWL reasoner and Pellet reasoner in ...