Fig. 2
Sigmoid function. A sketch of the sigmoid function \(f(x) = 1/\left (1+ e^{-\alpha \left (x - x_{0}\right)}\right)\). In the left panel there are three different values of the inflection point x0, using α=10 in all three cases. In the right panel there are five different values of α, using inflection point x0=0 in all three cases