Figure 5.

(a) Model of artificial neural network with structure 8-3-3-1 and activation function tanh presented as predicted odour intensity with respect to the odour intensity determined experimentally by the group of assessors. (b) Model of artificial neural network with structure 8-3-2-1 and activation function Leaky ReLUs with the parameter $a=0.03$ presented as predicted hedonic tone with respect to the hedonic tone determined experimentally by the group of assessors. ∎, two-component; ●, three-component; ▲, four-component; ◆, five-component.