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12. Ontologies: RDF Business Models

Chapter 12. Ontologies: RDF Business Models

Since the focus of this book is more on the practical usage of RDF than the more theoretical Semantic Web, I wasn’t sure about covering ontologies. After all, in a white paper at Stanford University, Tom Gruber described ontology thus:

An ontology is a specification of a conceptualization.

It’s a bit difficult to determine how to incorporate a discussion of a concept based on such an elusive definition into a book that begins with Practical. However, looking at examples of ontologies, in particular OIL, DAML+OIL, and the W3C’s current OWL (Web Ontology Language) effort, it seemed to me that ontologies do fit into a book with Practical in the title, because an ontology is really the definition of the business rules associated with a vocabulary. In other words: ontologies are business models. According to the Web Ontology Language (OWL) Use Cases and Requirements document:


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