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我正在尝试从推理器（隐士 1.3.8.4）和 OWLApi（3.4.10）中检索属性断言。在这张图片中，我要检索“isGrandfather Sandro，isGrandfather Sergio”。



图片 -我尝试使用 Ignazio 回答的对象属性断言： https ://stackoverflow.com/a/37497541/3760251

以 Horridge 为例，但 OWL API 更改了签名，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，如果您有来自 InferredObjectPropertyAxiomGenerator 的 addAxioms 方法的示例，我将不胜感激。

InferredObjectPropertyAxiomGenerator generator = new InferredObjectPropertyAxiomGenerator() { @Override protected void addAxioms(OWLEntity entity, OWLreasoner reasoner, OWLDataFactory dataFactory, Set result) { } }

谢谢，

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1 回答 1

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我从 Ignazio 找到了一个很棒的代码：https ://github.com/owlcs/owlapi/issues/643

我对您的代码进行了细微更改，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 中详述的修复）

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");
    }
}
于 2018-02-15T17:33:35.113 回答