Conceptual Graphs are a system of knowledge representation based on the semantic networks of AI and the logic of Charles Sanders Peirce. This directory contains the draft proposed ANSI standard for CGs , some examples and tutorials about CGs , a bibliography of books about CGs , and links to web sites with CG tools and resources. The book Knowledge Representation by John F. Sowa has recently been published. This directory contains some information about the book, including on-line copies of the preface and the table of contents . The on-line index contains over 600 links to web sites that contain background readings about the people and topics mentioned in the book.
Ontology is the study of existence.
An ontology is a system of categories for classifying and talking about the things that are assumed to exist. This directory contains a summary of the ontology developed and used in the KR book by John Sowa. Computer systems of the twenty-first century will be based on the principles of computer science that were established during the nineteenth and twentieth centuries. This directory contains memoirs, observations, and predictions about computer history. At the moment, it contains only one web page, which discusses the law of standards .