我是 Protege/OWL 的初学者,我无法理解为什么最大基数有效而最小基数无效。 我尝试过 Hermit Pellet 和 Fact 作为推理者。我知道开放世界假设,但这对我来说似乎不合逻辑。
我想表达的是,一场婚姻事件必须至少有2人参加。
Class: MarriageEvent
EquivalentTo:
这有效:
MarriageEvent 和 is_event_of 最多 2 人
这不是:
MarriageEvent 和 is_event_of 至少 2 人
所有个人都被声明为不同的个人。
我的本体:
<?xml version="1.0"?>
<Ontology xmlns="http://www.w3.org/2002/07/owl#"
xml:base="http://www.semanticweb.org/anato/ontologies/2017/7/untitled-ontology-184"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:xml="http://www.w3.org/XML/1998/namespace"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
ontologyIRI="http://www.semanticweb.org/anato/ontologies/2017/7/untitled-ontology-184">
<Prefix name="owl" IRI="http://www.w3.org/2002/07/owl#"/>
<Prefix name="rdf" IRI="http://www.w3.org/1999/02/22-rdf-syntax-ns#"/>
<Prefix name="xml" IRI="http://www.w3.org/XML/1998/namespace"/>
<Prefix name="xsd" IRI="http://www.w3.org/2001/XMLSchema#"/>
<Prefix name="rdfs" IRI="http://www.w3.org/2000/01/rdf-schema#"/>
<Declaration>
<NamedIndividual IRI="#Peter"/>
</Declaration>
<Declaration>
<NamedIndividual IRI="#Julia"/>
</Declaration>
<Declaration>
<ObjectProperty IRI="#is_event_of"/>
</Declaration>
<Declaration>
<NamedIndividual IRI="#Max"/>
</Declaration>
<Declaration>
<Class IRI="#Person"/>
</Declaration>
<Declaration>
<NamedIndividual IRI="#Event_Marriage"/>
</Declaration>
<Declaration>
<Class IRI="#MarriageEvent"/>
</Declaration>
<EquivalentClasses>
<Class IRI="#MarriageEvent"/>
<ObjectIntersectionOf>
<Class IRI="#MarriageEvent"/>
<ObjectMinCardinality cardinality="2">
<ObjectProperty IRI="#is_event_of"/>
<Class IRI="#Person"/>
</ObjectMinCardinality>
</ObjectIntersectionOf>
</EquivalentClasses>
<EquivalentClasses>
<Class IRI="#MarriageEvent"/>
<ObjectIntersectionOf>
<Class IRI="#MarriageEvent"/>
<ObjectMaxCardinality cardinality="2">
<ObjectProperty IRI="#is_event_of"/>
<Class IRI="#Person"/>
</ObjectMaxCardinality>
</ObjectIntersectionOf>
</EquivalentClasses>
<DisjointClasses>
<Class IRI="#MarriageEvent"/>
<Class IRI="#Person"/>
</DisjointClasses>
<ClassAssertion>
<Class IRI="#MarriageEvent"/>
<NamedIndividual IRI="#Event_Marriage"/>
</ClassAssertion>
<ClassAssertion>
<Class IRI="#Person"/>
<NamedIndividual IRI="#Julia"/>
</ClassAssertion>
<ClassAssertion>
<Class IRI="#Person"/>
<NamedIndividual IRI="#Max"/>
</ClassAssertion>
<ClassAssertion>
<Class IRI="#Person"/>
<NamedIndividual IRI="#Peter"/>
</ClassAssertion>
<DifferentIndividuals>
<NamedIndividual IRI="#Event_Marriage"/>
<NamedIndividual IRI="#Julia"/>
<NamedIndividual IRI="#Max"/>
<NamedIndividual IRI="#Peter"/>
</DifferentIndividuals>
<ObjectPropertyAssertion>
<ObjectProperty IRI="#is_event_of"/>
<NamedIndividual IRI="#Event_Marriage"/>
<NamedIndividual IRI="#Julia"/>
</ObjectPropertyAssertion>
<ObjectPropertyAssertion>
<ObjectProperty IRI="#is_event_of"/>
<NamedIndividual IRI="#Event_Marriage"/>
<NamedIndividual IRI="#Peter"/>
</ObjectPropertyAssertion>
<SubObjectPropertyOf>
<ObjectProperty IRI="#is_event_of"/>
<ObjectProperty abbreviatedIRI="owl:topObjectProperty"/>
</SubObjectPropertyOf>
<IrreflexiveObjectProperty>
<ObjectProperty IRI="#is_event_of"/>
</IrreflexiveObjectProperty>
<ObjectPropertyDomain>
<ObjectProperty IRI="#is_event_of"/>
<Class IRI="#MarriageEvent"/>
</ObjectPropertyDomain>
<ObjectPropertyRange>
<ObjectProperty IRI="#is_event_of"/>
<Class IRI="#Person"/>
</ObjectPropertyRange>
</Ontology>
<!-- Generated by the OWL API (version 4.2.8.20170104-2310) https://github.com/owlcs/owlapi -->
最佳答案
最少 2 人
不会因为开放世界假设而提示只认识一个人的婚姻。仅仅因为婚礼的第二方未知,并不意味着它不存在。
关于owl - 最小基数在 Protege 中未按预期工作,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45610282/