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Knowledge Interchange Format (KIF) - http://logic.stanford.edu/kif/kif.html
A DARPA project. KIF is a language designed for use in the interchange of knowledge among disparate computer systems. |
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KR, Inc. - http://www.kr.org/
Charitable organization concerned with fostering research and communication on knowledge representation and reasoning. Features conferences, educational materials and mailing lists. |
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http://www.webkb.org/ - http://www.webkb.org/
A set of tools using Conceptual Graphs formalism for building and documentation of knowledge bases, indexing or connecting elements of WWW-accessible documents. |
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John Sowa on Knowledge Representation - http://www.jfsowa.com/
Provides background material and tutorials on ontology and related topics in logic, conceptual graphs, and natural language semantics. |
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Conceptual Graphs Home Page - http://www.cs.uah.edu/~delugach/CG/
Features introductory material and bibliography, standard notation, events, projects, tools and researchers. |