A High-Efficiency Fatigued Speech Feature Selection Method for Air Traffic Controllers Based on Improved Compressed Sensing

Table 1

List of terminologies used in this paper.

ATC	Air traffic controller
ATCs	Air traffic controllers
MFCC	Mel-frequency cepstrum coefficient
CS	Compressed sensing
ETF	Equal-dimensional tight frame
FD	Fractal dimension
ICSCA	Improved CS construction algorithm (ICSCA)
NP	Nondeterministic polynomial
OMP	Orthogonal matching pursuit
RIP	Restricted isometry property
RBF	Radial basis function
SVM	Support vector machine
SWFF	Speech wavelet fractal feature
WLS-SVM	Weighted-least-squares SVM