Table 7. ANN notations.

Notation	Definition
i	Index unit in input layer or the feature number
h	Index unit in hidden layer
xi	Independent variable i (input)
P	Number of predictor (Independent) variables
neth	Scalar net activation of neuron h in hidden layer
neto	Scalar net activation of output layer
f	Activation function
oh	Weighted output of neuron h in the hidden layer
wih	Weight on the connection from input node i to hidden node h
wh	Weight on the connection from hidden node h to output node