Boosting Gaussian mixtures in an LVCSR system
Boosting Gaussian mixtures in an LVCSR system
复制标题
在 LVCSR 系统中增强高斯混合
DOI:
10.1109/icassp.2000.861945
复制
发表时间:
2000
期刊:
影响因子:
--
通讯作者:
M. Padmanabhan
中科院分区:
文献类型:
--
作者:
G. Zweig;M. Padmanabhan
In this paper, we apply boosting to the problem of frame-level phone classification, and use the resulting system to perform voicemail transcription. We develop parallel, hierarchical, and restricted versions of the classic AdaBoost algorithm, which enable the technique to be used in large-scale speech recognition tasks with hundreds of thousands of Gaussians and tens of millions of training frames. We report small but consistent improvements in both frame recognition accuracy and word error rate.