ADASs	advanced driver assistance systems
AR	autoregressive
BPM	beats per minute
DMS	driver monitoring system
DWT	discrete wavelet transform
FMCW	frequency-modulated continuous wave
HR	heart rate
HRV	heart rate variability
MAE	mean absolute error
MRE	mean relative error
PSD	power spectral density
RVM	relevance vector machine
SKF	sequential Kalman filter