WER	Word Error Rate
SGMM	Subspace Gaussian Mixture Model
LDA	Linear Discriminant Analysis
HDA	Heteroscedastic Discriminant Analysis
GLRDA	Generalized Likelihood Ratio Discriminant Analysis
MLLR	Maximum Likelihood Linear Regression
FMLLR	Feature-space Maximum Likelihood Linear Regression
VTLN	Vocal Tract Length Nomalization
HMM	Hidden Markov Model
MFCC	Mel Frequency Cepstrum Coefficient
PLP	Perceptual Linear Predictive
MLP	Multi-Layor Perceptron
DNN	Deep Neural Network
BN	Bottleneck
GMM-HMM	Gaussian Mixture Model Hidden Markov Model
DNN-HMM	Deep Neural Network Hidden Markov Model
SHL-MDNN	Shared-Hidden-Layer Multilingual Deep Neural Network
LRMF	Low-Rank Matrix Factorization
CNN	Convolutional Neural Network
AM	Amplitude Modulation
TDNN	Time-Delayed Neural Network
CTC	Connectionist Temporal Classification
AF	Articulatory Feature
SBF	Stacked Bottleneck Feature
BLSTM	Bidirectional Long Short-Term Memory
CD-DNN-HMM	Context-Dependent Deep Neural Network Hidden Markov Model
KLD	Kullback-Leibler Divergence
KL-HMM	Kullback-Leibler Hidden Markov Models
SHL-MLSTM	Shared-Hidden-Layer Multilingual Long Short-Term Memory
G2P	Grapheme-to-Phoneme
VTLP	Vocal Tract Length Perturbation
SP	Speed Perturbation
SFM	Stochastic Feature Mapping