ANN	artificial neural network
CHI	Calinski–Harabaz index
DBI	Davies–Bouldin index
DWST	deep wavelet scattering transform
EEMD	ensemble empirical mode decomposition
HSMMs	hidden semi-Markov models
IM	impulse
KFCM	kernel fuzzy c-means
Ku	kurtosis
LLE	local linear embedding
LPP	local preserving projection
LSTM	long short-term memory
LWR	locally weighted regression
MI	mutual information
mRMR	max-relevance and min-redundancy
PAR	peak-to-average ratio
PCA	principal component analysis
SVM	support vector machine
Var	variance
VMD	variational mode decomposition