我正在建立一个智能家庭本体。我现在有一个类层次结构:
我想给' RoomStatus'的子类定义。例如,我想定义当室温在18-22摄氏度范围内且湿度在40-50%范围内时,房间温和状态。我试图在Protege中使用类表达式编辑器,但它不起作用。
我怎样才能实现这个定义? 提前谢谢!
答案 0 :(得分:3)
Hatim's answer可能适合你,但我认为最好不要在你不必使用时使用同等的阶级公理,并避免将温和状态与特定的温度和湿度联系起来。毕竟,房间具有温和身份意味着什么对于桑拿浴具有温和状态意味着什么。
我建议使用General Class Axiom来表示:
如果房间温度和湿度在指定范围内,则,房间状态为温和。
作为阶级公理,那是:
房间和(hasTemperature 某些整数[≥18,≤22])和(hasHumidity some 整数[≥40,≤50]) subClassOf (hasStatus 值 Mild_Status)
这几乎就是你在Protege中所写的内容:
这里的本体论(在RDF / XML和TTL中)有这个公理:
@prefix : <https://stackoverflow.com/q/29228328/1281433/> .
@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#> .
: a owl:Ontology .
:Room a owl:Class .
:Status a owl:Class .
:Mild_Status a owl:NamedIndividual , :Status .
:hasStatus a owl:ObjectProperty .
:hasTemperature a owl:DatatypeProperty .
:hasHumidity a owl:DatatypeProperty .
[ a owl:Class ;
rdfs:subClassOf [ a owl:Restriction ;
owl:hasValue :Mild_Status ;
owl:onProperty :hasStatus
] ;
owl:intersectionOf ( :Room _:b2 _:b3 )
] .
_:b3 a owl:Restriction ;
owl:onProperty :hasTemperature ;
owl:someValuesFrom [ a rdfs:Datatype ;
owl:onDatatype xsd:integer ;
owl:withRestrictions ( _:b0 _:b4 )
] .
_:b0 xsd:minInclusive 18 .
_:b4 xsd:maxInclusive 22 .
_:b2 a owl:Restriction ;
owl:onProperty :hasHumidity ;
owl:someValuesFrom [ a rdfs:Datatype ;
owl:onDatatype xsd:integer ;
owl:withRestrictions ( _:b5 _:b1 )
] .
_:b1 xsd:minInclusive 40 .
_:b5 xsd:maxInclusive 50 .
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns="https://stackoverflow.com/q/29228328/1281433/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
<owl:Ontology rdf:about="https://stackoverflow.com/q/29228328/1281433/"/>
<owl:Class rdf:about="https://stackoverflow.com/q/29228328/1281433/Room"/>
<owl:Class rdf:about="https://stackoverflow.com/q/29228328/1281433/Status"/>
<owl:Class>
<rdfs:subClassOf>
<owl:Restriction>
<owl:onProperty>
<owl:ObjectProperty rdf:about="https://stackoverflow.com/q/29228328/1281433/hasStatus"/>
</owl:onProperty>
<owl:hasValue>
<owl:NamedIndividual rdf:about="https://stackoverflow.com/q/29228328/1281433/Mild_Status">
<rdf:type rdf:resource="https://stackoverflow.com/q/29228328/1281433/Status"/>
</owl:NamedIndividual>
</owl:hasValue>
</owl:Restriction>
</rdfs:subClassOf>
<owl:intersectionOf rdf:parseType="Collection">
<owl:Class rdf:about="https://stackoverflow.com/q/29228328/1281433/Room"/>
<owl:Restriction>
<owl:onProperty>
<owl:DatatypeProperty rdf:about="https://stackoverflow.com/q/29228328/1281433/hasHumidity"/>
</owl:onProperty>
<owl:someValuesFrom>
<rdfs:Datatype>
<owl:onDatatype rdf:resource="http://www.w3.org/2001/XMLSchema#integer"/>
<owl:withRestrictions rdf:parseType="Collection">
<rdf:Description>
<xsd:maxInclusive rdf:datatype="http://www.w3.org/2001/XMLSchema#integer"
>50</xsd:maxInclusive>
</rdf:Description>
<rdf:Description>
<xsd:minInclusive rdf:datatype="http://www.w3.org/2001/XMLSchema#integer"
>40</xsd:minInclusive>
</rdf:Description>
</owl:withRestrictions>
</rdfs:Datatype>
</owl:someValuesFrom>
</owl:Restriction>
<owl:Restriction>
<owl:onProperty>
<owl:DatatypeProperty rdf:about="https://stackoverflow.com/q/29228328/1281433/hasTemperature"/>
</owl:onProperty>
<owl:someValuesFrom>
<rdfs:Datatype>
<owl:onDatatype rdf:resource="http://www.w3.org/2001/XMLSchema#integer"/>
<owl:withRestrictions rdf:parseType="Collection">
<rdf:Description>
<xsd:minInclusive rdf:datatype="http://www.w3.org/2001/XMLSchema#integer"
>18</xsd:minInclusive>
</rdf:Description>
<rdf:Description>
<xsd:maxInclusive rdf:datatype="http://www.w3.org/2001/XMLSchema#integer"
>22</xsd:maxInclusive>
</rdf:Description>
</owl:withRestrictions>
</rdfs:Datatype>
</owl:someValuesFrom>
</owl:Restriction>
</owl:intersectionOf>
</owl:Class>
</rdf:RDF>
答案 1 :(得分:1)
你可以使用Protege的类表达式编辑器来完成它,但是有一些步骤要遵循:
您创建了#Mild_status并将其设为subClassof #RoomStatus(您可以在编辑器中看到它)
您必须定义两个数据属性的域和范围(#centigrade和#humidity),例如,将#RoomStatus作为域,将xml数据类型作为整数范围。所有这些都可以通过Protege来完成。
最后,使用类表达式编辑器:你必须声明#Mild_status等同于:
RoomStatus
and (centigrade some integer[> 18])
and (centigrade some integer[< 22])
and (humidity some integer[> 40])
and (humidity some integer[<50])
如果要将此表达式用于实例检索推理:您必须注意并非所有的reasoners都支持数据范围推理。 Pellet支持这种表达,但我认为Fact ++没有。