'How to create PSS and SS activation functions in Keras

I'm using keras with tensorflow backend. My goal is to add my custom activation functions (PSS, SS) but I don't know how can i implement them.

Positive Smooth Staircase (PSS) activation function

Where n is number of output labels, w is a constant.

Smooth Staircase (SS) activation function

Where n is number of output labels (output neurons), c is a constant.

tensorflowkerasactivation-function


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