The MIT ATIS system: February 1992 progress report

Authors:
Victor Zue;James Glass;David Goddeau;David Goodine;Lynette Hirschman;Michael Phillips;Joseph Polifroni;Stephanie Seneff
Affiliations:
Massachusetts Institute of Technology, Cambridge, Massachusetts;Massachusetts Institute of Technology, Cambridge, Massachusetts;Massachusetts Institute of Technology, Cambridge, Massachusetts;Massachusetts Institute of Technology, Cambridge, Massachusetts;Massachusetts Institute of Technology, Cambridge, Massachusetts;Massachusetts Institute of Technology, Cambridge, Massachusetts;Massachusetts Institute of Technology, Cambridge, Massachusetts;Massachusetts Institute of Technology, Cambridge, Massachusetts
Venue:
HLT '91 Proceedings of the workshop on Speech and Natural Language
Year:
1992

Citing 6
Cited 5

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DARPA February 1992 ATIS benchmark test results

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Abstract

This paper describes the status of the MIT ATIS system as of February 1992, focusing especially on the changes made to the SUMMIT recognizer. These include context-dependent phonetic modelling, the use of a bigram language model in conjunction with a probabilistic LR parser, and refinements made to the lexicon. Together with the use of a larger training set, these modifications combined to reduce the speech recognition word and sentence error rates by a factor of 2.5 and 1.6, respectively, on the October '91 test set. The weighted error for the entire spoken language system on the same test set is 49.3%. Similar results were also obtained on the February '92 benchmark evaluation.