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Formalized Common Knowledge |
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Version 2.0 of the OpenCyc knowledge base is now available. See the OpenCyc KB v2.0 Release Notes for additional information. OpenCyc Executable Downloads:You can download the OpenCyc knowledgebase and inference system from SourceForge.
OpenCyc Ontologies (OWL Files):The full OpenCyc content is available for download in the following OWL files: Current Version
Archived Versions2009 April 07
2008 June 10
Last updated: April 20, 2009
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