Virtual Computational Chemistry Laboratory

Input data Output results Example List of key words



ACTIVATION

Keyword of Integer Type

This keyword indicates activation function of neurons. The input and output data are normalised (only training set is used to determine range of values) to the default range of each function.
 1/(1+exp(-x)) {0}  -- the famous logistic activation function. The range of values is  [0.1, 0.9].
th(x) {1} Symmetrical over 0, [-0.9,0.9]
x/(1+|x|) {2}Symmetrical and fast for calculations, [-0.9,0.9].

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