用于检索对象属性断言Hermit和OWLApi

Question

我试图从reasoner(Hermit1.3.8.4)和OWLApi(3.4.10)中检索属性断言。在这张图中，我想找回“我是爷爷桑德罗，我是爷爷塞尔吉奥”。

图片-对象属性断言

我尝试在https://stackoverflow.com/a/37497541/3760251中使用Ignazio答案

与Horridge的例子，但OWL API改变了签名，我不知道如何使用它。https://www.javatips.net/api/owl-master/owlapi-master/tools/src/main/java/org/semanticweb/owlapi/util/inferredsubobjectpropertyaxiomgenerator.java

因此，如果您有一个来自InferredObjectPropertyAxiomGenerator的addAxioms方法的示例，我很感激。

InferredObjectPropertyAxiomGenerator生成器=new InferredObjectPropertyAxiomGenerator（）{@override protected void addAxioms（OWLEntity实体,OWLReasoner reasoner,OWLDataFactory dataFactory,Set result）{}}

谢谢,

Answer 1

我在https://github.com/owlcs/owlapi/issues/643中找到了Ignazio的一段很棒的代码

我对您的代码做了一些小改动，并使用OWLAPI 4.3.1-snapshot和HermiT 1.3.8.431-snapshot运行它（这些版本包含问题#646中详细说明的修补程序）

输出文件包含对象属性：

public static void main(String[] args) throws Exception {
    OWLOntologyManager manager = OWLManager.createOWLOntologyManager();
    OWLOntology ontology = manager.loadOntology(
        IRI.create("https://raw.githubusercontent.com/owlcs/pizza-ontology/master/pizza.owl"));
    OWLDataFactory df = manager.getOWLDataFactory();

    Configuration configuration = new Configuration();
    configuration.ignoreUnsupportedDatatypes = true;
    ReasonerFactory rf = new ReasonerFactory();

    OWLReasoner reasoner = rf.createReasoner(ontology, configuration);
    boolean consistencyCheck = reasoner.isConsistent();
    if (consistencyCheck) {
        reasoner.precomputeInferences(InferenceType.CLASS_HIERARCHY,
            InferenceType.CLASS_ASSERTIONS, InferenceType.OBJECT_PROPERTY_HIERARCHY,
            InferenceType.DATA_PROPERTY_HIERARCHY, InferenceType.OBJECT_PROPERTY_ASSERTIONS);

        List<InferredAxiomGenerator<? extends OWLAxiom>> generators = new ArrayList<>();
        generators.add(new InferredSubClassAxiomGenerator());
        generators.add(new InferredClassAssertionAxiomGenerator());
        generators.add(new InferredDataPropertyCharacteristicAxiomGenerator());
        generators.add(new InferredEquivalentClassAxiomGenerator());
        generators.add(new InferredEquivalentDataPropertiesAxiomGenerator());
        generators.add(new InferredEquivalentObjectPropertyAxiomGenerator());
        generators.add(new InferredInverseObjectPropertiesAxiomGenerator());
        generators.add(new InferredObjectPropertyCharacteristicAxiomGenerator());

        // NOTE: InferredPropertyAssertionGenerator significantly slows down
        // inference computation
        generators.add(new org.semanticweb.owlapi.util.InferredPropertyAssertionGenerator());

        generators.add(new InferredSubClassAxiomGenerator());
        generators.add(new InferredSubDataPropertyAxiomGenerator());
        generators.add(new InferredSubObjectPropertyAxiomGenerator());
        List<InferredIndividualAxiomGenerator<? extends OWLIndividualAxiom>> individualAxioms =
            new ArrayList<>();
        generators.addAll(individualAxioms);

        generators.add(new InferredDisjointClassesAxiomGenerator());
        InferredOntologyGenerator iog = new InferredOntologyGenerator(reasoner, generators);
        OWLOntology inferredAxiomsOntology = manager.createOntology();
        iog.fillOntology(df, inferredAxiomsOntology);
        File inferredOntologyFile = new File("output.txt");
        // Now we create a stream since the ontology manager can then write to that stream.
        try (OutputStream outputStream = new FileOutputStream(inferredOntologyFile)) {
            // We use the same format as for the input ontology.
            manager.saveOntology(inferredAxiomsOntology, outputStream);
        }
    } // End if consistencyCheck
    else {
        System.out.println("Inconsistent input Ontology, Please check the OWL File");
    }
}