Proceedings of the 3rd conference on Message understanding (MUC3 '91)

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

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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 knowledge-based 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.

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Association for Computational Linguistics, Stroudsburg, PA, USA

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