我是 RDF 和 OWL 本体的初学者。
我正在尝试将此图转换为 OWL 语法。
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:dc="http://purl.org/dc/elements/1.1/"
>
<!-- OWL Class Definition - Robot Position -->
<owl:Class rdf:ID="house" />
<owl:Class rdf:ID="room" />
<owl:Class rdf:ID="kitchen" />
<owl:Class rdf:ID="garden" />
<owl:Class rdf:ID="table" />
<owl:Class rdf:ID="chair" />
<owl:ObjectProperty rdf:ID="composedBy">
<rdfs:domain rdf:resource="#house"/>
<rdfs:rang rdf:resource="#room" >
</owl:ObjectProperty>
</rdf:RDF>
我不知道如何使由关系组成的关系多次使用。
我正在考虑制定集合类型的范围
(house)---composedBy---(room, kitchen, garden)
但是,我想使用相同的关系
(kitchen)---comoposedBy---(table, chair)
验证器出错,因为我两次使用composedBy作为ID。 (我现在把它删除了)
我怎样才能正确翻译这个图。
:))
如果你想说一栋房子必须有一个(或至少一个)厨房,并且必须有一个(或至少一个)房间,并且必须有一个(或至少一个)花园,那么 unionOf 不是真正解决这里的问题。我认为,与其担心组合属性的范围,不如拥有更通用的组件属性,并通过使用存在限制来表达必须保持的不同关系,这可能会更有帮助。例如,你可以这样说
房屋⊑ =1 有部分.厨房
房屋⊑ ≥2有部分房间
房屋⊑ ∃hasPart.花园
说一栋房子恰好有一个厨房,至少两个房间,和至少一个花园。同样,你可以说有一张桌子和一把椅子
厨房及套房∃hasPart.椅子
厨房及套房∃hasPart.Table
在 Protégé 中,这看起来像:
Turtle 和 RDF/XML 中的 RDF 序列化是:
@prefix : <http://www.example.org/houses#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
<http://www.example.org/houses>
a owl:Ontology .
:hasPart a owl:ObjectProperty .
:Table a owl:Class .
:Room a owl:Class .
:Garden a owl:Class .
:Chair a owl:Class .
:House a owl:Class ;
rdfs:subClassOf [ a owl:Restriction ;
owl:minQualifiedCardinality "2"^^xsd:nonNegativeInteger ;
owl:onClass :Room ;
owl:onProperty :hasPart
] ;
rdfs:subClassOf [ a owl:Restriction ;
owl:onProperty :hasPart ;
owl:someValuesFrom :Garden
] ;
rdfs:subClassOf [ a owl:Restriction ;
owl:onClass :Kitchen ;
owl:onProperty :hasPart ;
owl:qualifiedCardinality "1"^^xsd:nonNegativeInteger
] .
:Kitchen a owl:Class ;
rdfs:subClassOf [ a owl:Restriction ;
owl:onProperty :hasPart ;
owl:someValuesFrom :Table
] ;
rdfs:subClassOf [ a owl:Restriction ;
owl:onProperty :hasPart ;
owl:someValuesFrom :Chair
] .
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns="http://www.example.org/houses#"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
<owl:Ontology rdf:about="http://www.example.org/houses"/>
<owl:Class rdf:about="http://www.example.org/houses#Room"/>
<owl:Class rdf:about="http://www.example.org/houses#House">
<rdfs:subClassOf>
<owl:Restriction>
<owl:onProperty>
<owl:ObjectProperty rdf:about="http://www.example.org/houses#hasPart"/>
</owl:onProperty>
<owl:onClass rdf:resource="http://www.example.org/houses#Room"/>
<owl:minQualifiedCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger"
>2</owl:minQualifiedCardinality>
</owl:Restriction>
</rdfs:subClassOf>
<rdfs:subClassOf>
<owl:Restriction>
<owl:onProperty rdf:resource="http://www.example.org/houses#hasPart"/>
<owl:someValuesFrom>
<owl:Class rdf:about="http://www.example.org/houses#Garden"/>
</owl:someValuesFrom>
</owl:Restriction>
</rdfs:subClassOf>
<rdfs:subClassOf>
<owl:Restriction>
<owl:onProperty rdf:resource="http://www.example.org/houses#hasPart"/>
<owl:onClass>
<owl:Class rdf:about="http://www.example.org/houses#Kitchen"/>
</owl:onClass>
<owl:qualifiedCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger"
>1</owl:qualifiedCardinality>
</owl:Restriction>
</rdfs:subClassOf>
</owl:Class>
<owl:Class rdf:about="http://www.example.org/houses#Chair"/>
<owl:Class rdf:about="http://www.example.org/houses#Table"/>
<owl:Class rdf:about="http://www.example.org/houses#Kitchen">
<rdfs:subClassOf>
<owl:Restriction>
<owl:onProperty rdf:resource="http://www.example.org/houses#hasPart"/>
<owl:someValuesFrom rdf:resource="http://www.example.org/houses#Table"/>
</owl:Restriction>
</rdfs:subClassOf>
<rdfs:subClassOf>
<owl:Restriction>
<owl:onProperty rdf:resource="http://www.example.org/houses#hasPart"/>
<owl:someValuesFrom rdf:resource="http://www.example.org/houses#Chair"/>
</owl:Restriction>
</rdfs:subClassOf>
</owl:Class>
</rdf:RDF>
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