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Understanding OWL Class Hierarchy and Relations in Ontology Modeling

This document provides an overview of OWL (Web Ontology Language) class hierarchy modeling, focusing on electronic devices, particularly computers. It details the superclass Owl:Thing, introduces subclasses and disjoint classes (such as Mouse and Hard Disk), and explains relationships like hasPart and hasBoard. The content also covers OWL expressions for defining classes like Analogical and BasicComputer, and compares OWL concepts with UML, highlighting unique features such as cardinality constraints and individual properties.

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Understanding OWL Class Hierarchy and Relations in Ontology Modeling

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  1. OWL Modelling

  2. 1.Building class hierarchy Owl: Thing: superclass of all OWL classes Electronic devices Computer

  3. 2. Class Hierarchy

  4. 3.Disjoints classes Hard Disk Mouse

  5. 3.Disjoints classes Mouse Hard Disk

  6. 3.Disjoints classes

  7. 4. Relations in OWL

  8. 4. Relations in OWL hasBoard Mother Board Computer BuildOn

  9. 4. Relations in OWL hasPart hasPart HardDisk Computer Component hasPart

  10. 5. Using Conditions

  11. 6. Individuals

  12. 7. OWL Expresions Analogical Mouse <owl:Class rdf:ID="Analogical"> <rdfs:subClassOf rdf:resource="#Mouse"/> <owl:disjointWith rdf:resource="#Optical"/> </owl:Class>

  13. 7. OWL Expresions Basic Computer <owl:Class rdf:ID="BasicComputer"> <owl:equivalentClass> <owl:Class> <owl:intersectionOf rdf:parseType="Collection"> <owl:Class rdf:about="#Computer"/> <owl:Restriction> <owl:onProperty rdf:resource="#hasComponent"/> <owl:someValuesFrom rdf:resource="#Memory"/> </owl:Restriction> </owl:intersectionOf> </owl:Class> </owl:equivalentClass> </owl:Class>

  14. 8. OWL vs. UML UML Class, property and ownedAttribute Instance Binary association Subclass, Generalization Association class Enumeration OWL Class Individual Property Subclass subproperty Class, property oneOf

  15. 8. OWL vs. UML UML multiplicity Derived Package Dependency OWL minCardinality, maxCardinality and inverseOf no equivalent Ontology reserved name, RDF:properties

  16. 8. OWL vs. UML OWL features with no UML equivalent Thing, global properties, autonomous individual Class-specific cardinality redefinition allValuesFrom, someValuesFrom SymmetricProperty, TransitiveProperty Classes as instances

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