OWL Web Ontology Language Guide

Michael K. Smith, Chris Welty, Deborah L. McGuinness

Michael K. Smith, Chris Welty, Deborah L. McGuinness, OWL Web Ontology Language Guide, World Wide Web Consortium, Recommendation REC-owl-guide-20040210, February 2004.

The World Wide Web as it is currently constituted resembles a poorly mapped geography. Our insight into the documents and capabilities available are based on keyword searches, abetted by clever use of document connectivity and usage patterns. The sheer mass of this data is unmanageable without powerful tool support. In order to map this terrain more precisely, computational agents require machine-readable descriptions of the content and capabilities of Web accessible resources. These descriptions must be in addition to the human-readable versions of that information. The OWL Web Ontology Language is intended to provide a language that can be used to describe the classes and relations between them that are inherent in Web documents and applications. This document demonstrates the use of the OWL language to (1) formalize a domain by defining classes and properties of those classes, (2) define individuals and assert properties about them, and (3) reason about these classes and individuals to the degree permitted by the formal semantics of the OWL language. The sections are organized to present an incremental definition of a set of classes, properties and individuals, beginning with the fundamentals and proceeding to more complex language components.


Keywords: OWL (Web Ontology Language);


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