Sixth International Conference on Spoken Language Processing
October 16-20, 2000
The BBN Byblos 2000 Conversational Mandarin LVCSR System
Han Shu, Chuck Wooters, Owen Kimball, Thomas Colthurst, Fred Richardson, Spyros Matsoukas, Herbert Gish
GTE/BBN Technologies, Cambridge, MA, USA
This paper describes the year 2000 BBN Byblos Mandarin large
vocabulary conversational speech recognition (LVCSR) system,
the winning (and only) Mandarin system from the Spring 2000
Hub-5 evaluation sponsored by NIST. We first outline the
training and decoding procedures used in the system, and
describe the performance of the system used in the evaluation.
We then describe the effect of several features that were not in
the evaluation system but have been added since, including
Jacobian compensated Vocal Tract Length Normalization
(VTLN), system combination, a higher number of system
parameters, and additional training data. Together these give an
additional 5.4% relative improvement on character error rate
(CER) from the evaluation system.
Shu, Han / Wooters, Chuck / Kimball, Owen / Colthurst, Thomas / Richardson, Fred / Matsoukas, Spyros / Gish, Herbert (2000):
"The BBN Byblos 2000 conversational Mandarin LVCSR system",
In ICSLP-2000, vol.2, 1007-1010.