ontology

问题 I've been searching for a solution for days now and since there is no forum at Apache Jena I had to create an account at stackoverflow to ask. My problem is that I need a temporary (deep) copy of an already loaded ontology, namely an object of OntModelImpl (with some imports but without any attached inference machine). Its purpose is to apply some validation steps on the model which require some SPARQL UPDATE queries to add some automatically generated triples first. These additional triples

问题 In my ontology I have individuals "pic Joan" which is an instance of concept "mountain" and "port Cerbère" which is an instance of concept "village". I have the relation "dominates" going from "pic Joan" to "port Cerbère" (in the sense that the mountain is perceived as being close and above the village, and hence "dominates it"). But in fact, I need to represent the information "pic Joan dominates port Cerbère at a distance of 1.5 miles NW". So, logically, I would need to attach to the

问题 In my ontology I have individuals "pic Joan" which is an instance of concept "mountain" and "port Cerbère" which is an instance of concept "village". I have the relation "dominates" going from "pic Joan" to "port Cerbère" (in the sense that the mountain is perceived as being close and above the village, and hence "dominates it"). But in fact, I need to represent the information "pic Joan dominates port Cerbère at a distance of 1.5 miles NW". So, logically, I would need to attach to the

问题 I have two separate Jena models, one containing an RDFS ontology and the other containing the statements. Right now I cannot, for example, write a query which returns all results for a particular class, since the class is not described in the RDF statements. What I want is to query the statements model by taking into account the ontology as well. How can I do this? 回答1: You can query the ontology using SPARQL language and store the result and you can query other statements using any normal

问题 I have two separate Jena models, one containing an RDFS ontology and the other containing the statements. Right now I cannot, for example, write a query which returns all results for a particular class, since the class is not described in the RDF statements. What I want is to query the statements model by taking into account the ontology as well. How can I do this? 回答1: You can query the ontology using SPARQL language and store the result and you can query other statements using any normal

问题 I have two separate Jena models, one containing an RDFS ontology and the other containing the statements. Right now I cannot, for example, write a query which returns all results for a particular class, since the class is not described in the RDF statements. What I want is to query the statements model by taking into account the ontology as well. How can I do this? 回答1: You can query the ontology using SPARQL language and store the result and you can query other statements using any normal

问题 I have two separate Jena models, one containing an RDFS ontology and the other containing the statements. Right now I cannot, for example, write a query which returns all results for a particular class, since the class is not described in the RDF statements. What I want is to query the statements model by taking into account the ontology as well. How can I do this? 回答1: You can query the ontology using SPARQL language and store the result and you can query other statements using any normal

问题 I have two separate Jena models, one containing an RDFS ontology and the other containing the statements. Right now I cannot, for example, write a query which returns all results for a particular class, since the class is not described in the RDF statements. What I want is to query the statements model by taking into account the ontology as well. How can I do this? 回答1: You can query the ontology using SPARQL language and store the result and you can query other statements using any normal

问题 I have two separate Jena models, one containing an RDFS ontology and the other containing the statements. Right now I cannot, for example, write a query which returns all results for a particular class, since the class is not described in the RDF statements. What I want is to query the statements model by taking into account the ontology as well. How can I do this? 回答1: You can query the ontology using SPARQL language and store the result and you can query other statements using any normal

问题 I'm trying to check an ontology for its consistency. The ontology includes only descriptions of individuals, the class and semantic rules are described by an imported ontology. I thougt using the isConsistenct method would be the right choice. OWLReasonerFactory reasonerFactory = new StructuralReasonerFactory(); OWLReasoner reasoner = reasonerFactory.createNonBufferingReasoner(mergedOntology); if(reasoner.isConsistent()){ return "Merged ontology PASSED the consistency test"; }else{ return