Trimming.DiniSigmoid

DiniSigmoid.py

from:

Normalized tunable sigmoid functions https://dinodini.wordpress.com/2010/04/05/normalized-tunable-sigmoid-functions/

Normalized Tunable Sigmoid Function https://dhemery.github.io/DHE-Modules/technical/sigmoid/#function

demo()

dini_sigmoid(x, k)

dini_sigmoid_inv(y, k)