The Web Ontology Language (OWL) is a language for defining and instantiating Web ontologies.[1] An OWL ontology may include descriptions of classes, along with their related properties and instances. OWL is designed for use by applications that need to process the content of information instead of just presenting information to humans. It facilitates greater machine interpretability of Web content than that supported by XML, RDF, and RDF Schema (RDF-S) by providing additional vocabulary along with a formal semantics. OWL is based on earlier languages
Abstract
This document specifies usage scenarios, goals and requirements for a web ontology language. An ontology formally defines a common set of terms that are used to describe and represent a domain. Ontologies can be used by automated tools to power advanced services such as more accurate Web search, intelligent software agents and knowledge management.
Status of this document
This Working Draft is the second version of the requirements for the Ontology Web Language (OWL) 1.0 specification. Major changes from the first version include
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The Web Ontology Language (OWL) is a language for defining and instantiating Web ontologies.[1] An OWL ontology may include descriptions of classes, along with their related properties and instances. OWL is designed for use by applications that need to process the content of information instead of just presenting information to humans. It facilitates greater machine interpretability of Web content than that supported by XML, RDF, and RDF Schema (RDF-S) by providing additional vocabulary along with a formal semantics. OWL is based on earlier languages
An Internet resource is defined as any resource with a Uniform Resource Identifier (URI). This includes the Uniform Resource Locators (URL) that identify entire Web sites as well as specific Web pages. As with today's HTML META tags, the RDF description statements, encased as part of an Extensible Markup Language (XML) section, could be included within a Web page (that is, a Hypertext Markup Language - HTML - file) or could be in separate files.
RDF is now a formal W3C Recommendation, meaning that it is ready for general use. Currently, a second W3C
The Resource Description Framework otherwise shortly called the RDF is a framework or an infrastructure that is used for exchange of metadata. This framework is also used for encoding and reusing the structured metadata. Resource Description Framework uses XML for imposing the restrictions to enable to follow a structured representation of data so that the data can be exchanged, encoded and reused.
One of the original aims for the world wide web was that as well as humans being able to read and understand the content, so could machines. As it is the
This document has been reviewed by W3C Members and other interested parties and has been endorsed by the Director as a W3C Recommendation. It is a stable document and may be used as reference material or cited as a normative reference from other documents. W3C's role in making the Recommendation is to draw attention to the specification and to promote its widespread deployment. This enhances the functionality and interoperability of the Web.
The list of know errors in this specification is available at
Resource Description Framework (RDF) is a model for describing collections of formalized statements about a Web resource. You can also think of RDF as a metadata system for the Web. Learn about this standard and about its relationship with the Semantic Web, Web Ontology Language (OWL), and more.
For almost as long as the World Wide Web Consortium (W3C) has worked toward next-generation markup technology in the form of XML, it has also worked toward next-generation technology for formal description of Web resources. Resource Description Framework
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