Abbreviation	Meaning
ADAM	Adaptive moment estimation
ANFIS	Adaptive neuro-fuzzy inference system
CNN	Convolutional neural network
GMDH	Group method of data handling
LSTM	Long short-term memory
MAE	Mean absolute error
RMSE	Root mean square error
RMSProp	Root mean squared propagation
SGD	Stochastic gradient descent
SGDM	Stochastic gradient descent with momentum
WPT	Wavelet packet transform
YOLO	You Only Look Once
Symbol	Meaning
b	Polarization matrix
f	Forgetting gate
g	High-pass filter
i	Iteration
h	Low-pass filter
m	Elementary moving average
n	Number of samples
o	Output gate
t	Time step
v	Moving average of the squares of the elements
x	Original signal
y	Observed value
$\widehat{y}$	Predicted output
$\overline{y}$	Average of the observed value
A	Scale parameter
B	Displacement parameter
E	Loss function
G	Input activation function
H	Output activation function
P	Steps forward
R and W	Earning matrices
R${}^2$	Coefficient of determination
$\alpha$	Learning rate
$\beta$	Decay rate
$\eta$	Number of predictions
$\sigma$	Activation function
$\iota$	Input gate
$\theta$	Vector of parameters
$\mathrm{\Delta }$	Period of the samples
$\mathrm{\Psi }$	Mother wavelet