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= Class or concept Basic OWL terminology 1/2 Classes may have subclasses (superclasses) Example -  Classes: people, dog, t...
Basic OWL terminology 1/2 <ul><li>Classes are defined by their properties. </li></ul><ul><li>Datatype property:  A feature...
Note that... <ul><li>... there is no clear rule for deciding whether something is a class, a property value or an instance...
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OWL terminology

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Basic OWL terminology

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Transcript of "OWL terminology"

  1. 1. = Class or concept Basic OWL terminology 1/2 Classes may have subclasses (superclasses) Example - Classes: people, dog, terrier Individuals: Bob, Brandy “ Terrier” is a subclass of “dog” = Individual or instance
  2. 2. Basic OWL terminology 1/2 <ul><li>Classes are defined by their properties. </li></ul><ul><li>Datatype property: A feature or attribute. E.g. people have age. </li></ul><ul><li>The value of the property is a number or string: Bob is “17”. </li></ul><ul><li>Object property: A relation between two classes, called domain (D) and range (R) of the property. E.g. dogs are fed by people. </li></ul>The value of the property is an individual: Brandy (a dog, instance of class “terrier”) is fed by Bob (a person, instance of class “People”). D R
  3. 3. Note that... <ul><li>... there is no clear rule for deciding whether something is a class, a property value or an instance </li></ul><ul><li>...there is no one single correct way for building an ontology </li></ul><ul><li>...ontology development is iterative </li></ul>
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