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我已经为此工作了几个小时，试图让 Pellet 与 Jenna 一起工作。现在我终于明白了它的工作原理。查询类和推断类进展顺利。例如：

SELECT * WHERE { ?x rdf:type uni:Adult}

但是，当尝试使用此查询标签时：

SELECT * WHERE { ?x ?y "Vincent"^^xsd:string}

返回：

 org.mindswap.pellet.jena.PelletReasoner@1b13b5d
PREFIX  xsd:  <http://www.w3.org/2001/XMLSchema#>
PREFIX  uni:  <http://localhost/SemanticSearch/semanticsearch.owl#>
PREFIX  rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX  rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX  owl:  <http://www.w3.org/2002/07/owl#>

SELECT  *
WHERE
  { ?x ?y "Vincent"^^xsd:string }

    {
      "head": {
        "vars": [ "x" , "y" ]
      } ,
      "results": {
        "bindings": [
    mrt 18, 2015 1:06:41 PM org.mindswap.pellet.jena.graph.loader.DefaultGraphLoader addUnsupportedFeature
    WARNING: Unsupported axiom: Ignoring range axiom for AnnotationProperty http://www.w3.org/2000/01/rdf-schema#label
    mrt 18, 2015 1:06:41 PM org.mindswap.pellet.jena.graph.loader.DefaultGraphLoader addUnsupportedFeature
    WARNING: Unsupported axiom: Ignoring range axiom for AnnotationProperty http://localhost/SemanticSearch/semanticsearch.owl#altLabel

        ]
      }
    }

我的完整代码如下：

            Model rawModel = ModelFactory.createDefaultModel();
            Reasoner r = PelletReasonerFactory.theInstance().create();
            Model data = FileManager.get().loadModel("file:C:/wamp/www/SemanticSearch/workspace/SemanticSearch/src/semanticsearch.owl");

            InfModel model = ModelFactory.createInfModel(r, data);
            InputStream in = new FileInputStream(new File("C:/wamp/www/SemanticSearch/semanticsearch.owl"));

            System.out.println(model.getReasoner()); 


             String sparqlQueryString1= "PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>" +
                 "PREFIX owl: <http://www.w3.org/2002/07/owl#>"+
                     " PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>"+
                     " PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>"+
                     " PREFIX uni: <http://localhost/SemanticSearch/semanticsearch.owl#>"+
                     " SELECT * WHERE { ?x ?y \"Vincent\"^^xsd:string}";
                System.out.println(sparqlQueryString1); 


                          Query query = QueryFactory.create(sparqlQueryString1);
                          QueryExecution qexec = QueryExecutionFactory.create(query, model);

                          ResultSet results = qexec.execSelect();
                         //ORGINEEL ResultSetFormatter.out(System.out, results, query);       
                         //ALS RDF ResultSetFormatter.outputAsRDF("", results);    
                          ResultSetFormatter.outputAsJSON(results);
                         qexec.close() ;
        }

Jena 中没有查询字符串吗？甚至在我使用 Pellet 时也不行？有没有其他方法可以使用 Jena 和 Pellet 查询我的本体的替代标签？

4

2 回答 2

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好吧，这有点愚蠢。结果我意外地使用 OWL/XML 导出了我的本体，将其保存为 RDF/XML 修复了这个问题。

于 2015-03-18T13:50:46.473 回答
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该警告只是说推理器忽略了注释属性上声明的范围。您的查询不应受其影响。

于 2015-03-18T07:15:51.203 回答