Cyc public ontology released in DAML format

The OpenCyc Upper Ontology is now available in DAML XML format. The Darpa Agent Markup Language is described at Cyc's content is located at It consists of approximately 3,000 classes and binary properties describing high level concepts common to most subject domains. The associated rules, remaining relationships, knowledge-entry tools, sample code, and executable inference engine are planned for release when ready. Please note that this DAML contribution is a restatement of the previously released Cyc Upper Ontology and that the OpenCyc ontology will contain additional content and refinement of included comments.

Posted by Stephen L. Reed 2001-06-27