如果我理解你的问题,你希望能够通过声称hasDocumentWithTitle
具有作为子属性链从
docX topic someTopic
docX title "SampleTitle"
someRopic hasDocumentWithTitle "SampleTitle"
你几乎可以做到这一点与产业链,来推断(inverse topic) o title
。不幸的是,在OWL属性链中不能以数据类型属性结束,所以你不能这样做。但是,您可以使用SWRL规则,并且许多OWL2 reasoners处理SWRL规则。你会使用形式的规则:(?DOC,话题)
话题∧标题(?DOC,标题)→hasDocumentWithTitle(?话题,标题)
例如我们可以用下面的本体得到以下结果门生:
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:rule-example="http://www.example.org/rule-example#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:swrl="http://www.w3.org/2003/11/swrl#"
xmlns:swrlb="http://www.w3.org/2003/11/swrlb#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
<owl:Ontology rdf:about="http://www.example.org/rule-example"/>
<owl:Class rdf:about="http://www.example.org/rule-example#Document"/>
<owl:Class rdf:about="http://www.example.org/rule-example#Topic"/>
<owl:ObjectProperty rdf:about="http://www.example.org/rule-example#hasTopic"/>
<owl:DatatypeProperty rdf:about="http://www.example.org/rule-example#hasTitle"/>
<owl:DatatypeProperty rdf:about="http://www.example.org/rule-example#hasDocumentWithTitle"/>
<owl:NamedIndividual rdf:about="http://www.example.org/rule-example#doc42">
<rdf:type rdf:resource="http://www.example.org/rule-example#Document"/>
<rule-example:hasTitle>Document Number Forty-Two</rule-example:hasTitle>
<rule-example:hasTopic>
<owl:NamedIndividual rdf:about="http://www.example.org/rule-example#topic101">
<rdf:type rdf:resource="http://www.example.org/rule-example#Topic"/>
<rule-example:hasTopic rdf:resource="http://www.example.org/rule-example#topic101"/>
</owl:NamedIndividual>
</rule-example:hasTopic>
</owl:NamedIndividual>
<swrl:Imp>
<swrl:head>
<swrl:AtomList>
<rdf:rest rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#nil"/>
<rdf:first>
<swrl:DatavaluedPropertyAtom>
<swrl:propertyPredicate rdf:resource="http://www.example.org/rule-example#hasDocumentWithTitle"/>
<swrl:argument2>
<swrl:Variable rdf:about="urn:swrl#title"/>
</swrl:argument2>
<swrl:argument1>
<swrl:Variable rdf:about="urn:swrl#topic"/>
</swrl:argument1>
</swrl:DatavaluedPropertyAtom>
</rdf:first>
</swrl:AtomList>
</swrl:head>
<swrl:body>
<swrl:AtomList>
<rdf:rest>
<swrl:AtomList>
<rdf:rest rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#nil"/>
<rdf:first>
<swrl:DatavaluedPropertyAtom>
<swrl:propertyPredicate rdf:resource="http://www.example.org/rule-example#hasTitle"/>
<swrl:argument1>
<swrl:Variable rdf:about="urn:swrl#doc"/>
</swrl:argument1>
<swrl:argument2 rdf:resource="urn:swrl#title"/>
</swrl:DatavaluedPropertyAtom>
</rdf:first>
</swrl:AtomList>
</rdf:rest>
<rdf:first>
<swrl:IndividualPropertyAtom>
<swrl:propertyPredicate rdf:resource="http://www.example.org/rule-example#hasTopic"/>
<swrl:argument1 rdf:resource="urn:swrl#doc"/>
<swrl:argument2 rdf:resource="urn:swrl#topic"/>
</swrl:IndividualPropertyAtom>
</rdf:first>
</swrl:AtomList>
</swrl:body>
</swrl:Imp>
</rdf:RDF>
重复的在http://answers.semantic web.com作为[Inference OWL](http://answers.semanticweb.com/questions/26526/inference-owl)。 –