CNN	Convolutional neural network
LSTM	Long short-term memory
BiLSTM	Bidirectional LSTM
GRU	Gated recurrent unit
BiGRU	Bidirectional GRU
DFFNN	Deep feedforward neural network
BO	Bayesian optimization
SLSQP	Sequential least squares programming
XGBoost	Extreme gradient boosting
RT	Random forest
WTI	West Texas Intermediate
RMSE	Root mean of squared error
MAE	Mean absolute error
MAPE	Mean absolute percentage error