Pattern matching in the TEXTRACT information extraction system

Authors:
Tsuyoshi Kitani;Yoshio Eriguchi;Masami Hara
Affiliations:
Carnegie Mellon University, Pittsburgh, PA;Carnegie Mellon University, Pittsburgh, PA;Carnegie Mellon University, Pittsburgh, PA
Venue:
COLING '94 Proceedings of the 15th conference on Computational linguistics - Volume 2
Year:
1994

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MUC-5 evaluation metrics

MUC5 '93 Proceedings of the 5th conference on Message understanding
GE-CMU: description of the SHOGUN system used for MUC-5

MUC5 '93 Proceedings of the 5th conference on Message understanding

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Abstract

In information extraction systems, pattern matchers are widely used to identify information of interest in a sentence. In this paper, pattern matching in the TEXTRACT information extraction system is described. It comprises a concept search which identifies key words representing a concept, and a template pattern search which identifies patterns of words and phrases. TEXTRACT using the matcher performed well in the TIPSTER/MUC-5 evaluation. The pattern matching architecture is also suitable for rapid system development across different domains of the same language.