BiLSTM	bidirectional long short-term
DCT	discrete cosine transform
ECG	electrocardiography
FD	Fréchet distance
LSTM-RNN	long short-term memory recurrent neural network
MIMIC	Multiparameter Intelligent Monitoring in Intensive Care
r	Pearson’s correlation coefficient
ppg	photoplethysmography
PRD	percentage root mean square difference
RMSE	root mean square error
XDJDL	cross-domain joint dictionary learning