Conceptual graph

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John F. Sowa's conceptual graphs (CGs) are a system of logic based on the existential graphs of Charles Sanders Peirce and the semantic networks of artificial intelligence. They express meaning in a form that is logically precise, humanly readable, and computationally tractable. With their direct mapping to language, conceptual graphs serve as an intermediate language for translating computer-oriented formalisms to and from natural languages. With their graphic representation, they serve as a readable, but formal design and specification language. CGs have been implemented in a variety of projects for information retrieval, database design, expert systems, and natural language processing.

Contents 1 Projects and tools 2 Related work 3 Reference 4 Bibliography 5 External links 5.1 People 5.2 Resources

[edit] Projects and tools

A list of projects in which CGs play a key role is to follow. A page about CG tools has been created; it compares CG tools on over 160 criteria.

[edit] Related work

Together with concepts like conceptual schema, semantic network, knowledge representation, principal components analysis, Teuvo Kohonen's self-organizing maps, and Bayesian inference, conceptual graphs may eventually make it possible to implement intelligent agents for unsupervised learning.

[edit] Reference

• Sowa, J.F. (1984), Conceptual Structures: Information Processing in Mind and Machine, Addison-Wesley, Reading, MA, 1984.

[edit] Bibliography

Sowa, J.F. (1976), "Conceptual Graphs for a Data Base Interface", IBM Journal of Research and Development, vol. 20, no. 4, pp. 336-357, July 1976. GIF facsimile (very large)

[edit] External links

[edit] People

There is a lively worldwide conceptual graphs research community. The community usually meets at the International Conferences on Conceptual Structures (ICCS) which have been held annually in Europe, Australia, and North America since 1993. The following is a sample listing of currently active researchers on conceptual graphs:

Galia Angelova – Bulgaria Tru Cao – Vietnam Michel Chein – France Dan Corbett – USA Harry Delugach – USA David Genest – France Ollivier Haemmerle – France Adil Kabbaj – Morocco Pavel Kocura – UK Robert Levinson – USA Philippe Martin – Australia Guy Mineau – Canada

Aldo de Moor – Belgium Bernard Moulin – Canada Marie-Laure Mugnier – France Engelbert Mephu Nguifo Ulrik Petersen – Denmark Heather Pfeiffer – USA Simon Polovina – UK Henrik Schaerfe – Denmark Robert Spillers John Sowa – USA Albena Strupchanska – Bulgaria Gerd Stumme

[edit] Resources

• Conceptual Structures Home Page
• Conceptual Graphs Home Page
• John F. Sowa
• University of Aalborg Online Course

This page uses content from the English-language version of Wikipedia. The original article was at Conceptual graph. The list of authors can be seen in the page history. As with Psychology Wiki, the text of Wikipedia is available under the GNU Free Documentation License.