Question

我正在使用最新版本的pellet推理器和OWL API：

 OWLOntologyManager manager=OWLManager.createOWLOntologyManager();
 OWLOntology fist_ontology=manager.loadOntologyFromOntologyDocument.........
 ................
 OWLOntology last_ontology=manager.loadOntologyFromOntologyDocument..........

 reasoner=PelletReasonerFactory.getInstance().createReasoner(last_ontology);
 manager.addOntologyChangeListener(reasoner);

管理员加载了几个本体。现在我需要在文件中保存Pellet为管理器加载的所有本体所做的所有推论，但我找不到任何示例。有人可以帮帮我吗？谢谢！

Answer 1

我已经解决了：

List<InferredAxiomGenerator<? extends OWLAxiom>> gens = new ArrayList<>();
         gens.add(new InferredSubClassAxiomGenerator());  
         gens.add(new InferredClassAssertionAxiomGenerator());
         gens.add( new InferredDisjointClassesAxiomGenerator());
         gens.add( new InferredEquivalentClassAxiomGenerator());
         gens.add( new InferredEquivalentDataPropertiesAxiomGenerator());
         gens.add( new InferredEquivalentObjectPropertyAxiomGenerator());
         gens.add( new InferredInverseObjectPropertiesAxiomGenerator());
         gens.add( new InferredObjectPropertyCharacteristicAxiomGenerator());
         gens.add( new InferredPropertyAssertionGenerator());
         gens.add( new InferredSubDataPropertyAxiomGenerator());
         gens.add( new InferredSubObjectPropertyAxiomGenerator());

         InferredOntologyGenerator iog = new InferredOntologyGenerator(reasoner, gens);
         OWLOntology infOnt = manager.createOntology();
         iog.fillOntology(datafactory, infOnt);
         manager.saveOntology(infOnt,new RDFXMLDocumentFormat(),IRI.create(new File("D://file.owl")));

Answer 2

public void flushToFile() {
        reasoner.flush();
        //System.out.println(reasoner.isEntailed(ax5));
        InferredOntologyGenerator gen = new InferredOntologyGenerator(reasoner);
        gen.fillOntology(factory, newOntology);
        try {
            manager.saveOntology(newOntology, new FileOutputStream(new File("D:\\XYZ\\OutputNew.owl")));
        } catch (OWLOntologyStorageException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

您可以使用此api将本体保存到文件。另外，为了您对工作的详细了解，您可以浏览以下链接： - tells about the working of a pellet reasoner and swrl rules

使用OWL API保存Pellet推断

2 个答案: