Title
Ensemble Acoustic Modeling for CD-DNN-HMM Using Random Forests of Phonetic Decision Trees
Abstract
We propose a novel approach to generate an ensemble of context-dependent deep neural networks (CD-DNNs) by using random forests of phonetic decision trees (RF-PDTs) and construct an ensemble acoustic model (EAM) accordingly for speech recognition. We present evaluation results on the TIMIT dataset and a telemedicine automatic captioning dataset and demonstrate the superior performance of the proposed RF-PDT+CD-DNN based EAM over the conventional CD-DNN based single acoustic model (SAM) in phone and word recognition accuracies.
Year
DOI
Venue
2016
10.1007/s11265-015-1001-9
Journal of Signal Processing Systems
Keywords
Field
DocType
Ensemble acoustic model,Random forest,Phonetic decision tree,Deep neural network,Discriminative pre-training
TIMIT,Decision tree,Closed captioning,Computer science,Phone,Artificial intelligence,Random forest,Pattern recognition,Word recognition,Speech recognition,Hidden Markov model,Machine learning,Acoustic model
Journal
Volume
Issue
ISSN
82
2
1939-8018
Citations 
PageRank 
References 
1
0.36
19
Authors
3
Name
Order
Citations
PageRank
Tuo Zhao122240.58
Yunxin Zhao2807121.74
Xin Chen31169.64