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Ontologies

Ontologies. IS 277 Spring 2005. Outline. Ontologies Types of ontologies Examples Ontology engineering Ontology standards Machine-readable ontologies. Ontologies. Ontos logos A theory of existence What the world is made of But only a theory Machine-readable. Types of ontologies.

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Ontologies

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  1. Ontologies IS 277 Spring 2005

  2. Outline • Ontologies • Types of ontologies • Examples • Ontology engineering • Ontology standards • Machine-readable ontologies

  3. Ontologies • Ontos logos • A theory of existence • What the world is made of • But only a theory • Machine-readable

  4. Types of ontologies • Document • Metadata • Domain • Service

  5. Examples • Atomism • Data models • Taxonomies / classifications • Controlled vocabularies • Cataloguing standards

  6. Ontology engineering • Well-defined • Coherent • Extensible • Modular • Layered • Independent of applications • Minimal commitments

  7. Ontology standards • Islands of automation • User groups • Standards organizations • Can fail • Multiple, diverse standards • Translation among them

  8. Machine-readable ontologies • Standardized ways of writing down ontology standards • XML, RDF, and OWL • “Meaning” conferred by software

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