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Unisys: description of the Unisys system used for MUC-3

Published: 21 May 1991 Publication History

Abstract

This paper describes the Unisys MUC-3 text understanding system, a system based upon a three-tiered approach to text processing in which a powerful <u>knowledge-based</u> form of information retrieval plays a central role. This knowledge-based form of information retrieval makes it possible to define an effective level of text analysis that falls somewhere between what is possible with standard keyword-based information retrieval techniques and deep linguistic analysis.

References

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Tim Finin, Rich Fritzson, and Dave Matuzsek. Adding forward chaining and truth maintenance to prolog. In Fifth IEEE Conference on Artificial Intelligence Application, pages 123--130, March 1989.
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Tim Finin, Robin McEntire, Carl Weir, and Barry Silk. A three-tiered approach to natural language text retrieval. In Proceedings of the AAAI workshop on Natural Language Text Retrieval, Los Angeles, July 1991.
[3]
L. Hirschman, M. Palmer, J. Dowding, D. Dahl, M. Linebarger, R. Passonneau, F.-M. Lang, C. Ball, and C. Weir. The PUNDIT natural-language processing system. In AI Systems in Government Conf. Computer Society of the IEEE, March 1989.
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Chris Paice. Another stemmer. SIGIR Forum, Fall 1990.
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Fernando C. N. Pereira and David H. D. Warren. Definite clause grammars for language analysis---a survey of the formalism and a comparison with augmented transition networks. Artificial Intelligence, 13(3):231--278, 1980.
[6]
Bob Pollack. Message format processing language. Manual, Unisys Center for Advanced Information Technology, August 1989. Version 2.1.
[7]
Carl Weir, Tim Finin, Barry Silk, Marcia Linebarger, and Robin McEntire. Knowledge-based strategies for robust text-understanding. The Eighth Annual Intelligence Community AI/Advance Computing Symposium, March 1991.

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  1. Unisys: description of the Unisys system used for MUC-3

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    cover image DL Hosted proceedings
    MUC3 '91: Proceedings of the 3rd conference on Message understanding
    May 1991
    357 pages
    ISBN:1558602364

    Publisher

    Association for Computational Linguistics

    United States

    Publication History

    Published: 21 May 1991

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