FE	fuzzy entropy
SE	sample entropy
PE	permutation entropy
DE	dispersion entropy
AE	approximate entropy
MSE	multiscale entropy
MPE	multiscale permutation entropy
MFE	multiscale fuzzy entropy
made	adaptive multiscale dispersion entropy
HE	hierarchical entropy
HFE	hierarchical fuzzy entropy
T-SNE	T-Distributed Stochastic Neighbor Embedding
SSS	sea state signal
MvmHFD	multivariate multiscale HFD
QPSO	quantum-behaved particle swarm optimization
PSO	particle swarm optimization
BWO	beluga whale optimization
HHO	Harris hawk optimization
SlEn	slope entropy
1D-CNN	one-dimensional convolutional neural network