Towards a robust real-time decoder

Author

Davenport, Jason ; Schwartz, Richard ; Nguyen, Long

Author_Institution

BBN Technol., GTE Internetworking, Cambridge, MA, USA

Volume

2

fYear

1999

fDate

15-19 Mar 1999

Firstpage

645

Abstract

We present several algorithms that speed up our BBN BYBLOS decoder. We briefly describe the techniques that we have used before this year. Then we present new techniques that speed up the recognition search by a factor of 10 with little effect on accuracy using a combination of fast Gaussian computation, grammar spreading, and grammar caching, within the 2-pass n-best paradigm. We also describe our decoder metering strategy, which allows us to conveniently test for search errors. Finally, we describe a grammar compression technique that decreases the storage needed for each additional ngram to only 10 bits

Keywords

Gaussian processes; cache storage; data compression; decoding; grammars; real-time systems; search problems; speech coding; speech recognition; 2-pass n-best paradigm; BBN BYBLOS decoder; accuracy; algorithms; continuous speech recognition; decoder metering; fast Gaussian computation; grammar caching; grammar compression; grammar spreading; ngram cache; recognition search; robust real-time decoder; search errors; storage reduction; Decoding; Lattices; Loss measurement; Natural languages; Performance analysis; Real time systems; Robustness; Speech recognition; Testing; Vocabulary;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on

Conference_Location

Phoenix, AZ

ISSN

1520-6149

Print_ISBN

0-7803-5041-3

Type

conf

DOI

10.1109/ICASSP.1999.759749

Filename

759749