Uni-Polar Sigmoid

#Artificial Neuron #Neural Network #Basics #Activation Function

A uni-Polar sigmoid function is

$σ (x) = \frac{1}{1 + e^{- x}} .$

Visualization

Uni-polar Sigmoid function

Tricks

A very useful trick:

$1 - σ (x) = σ (- x) .$

Planted: 2018-11-19 by L Ma;

Dynamic Backlinks to cards/machine-learning/neural-networks/activation-uni-polar-sigmoid:

Uni-Polar Sigmoid

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cards/machine-learning/neural-networks/activation-uni-polar-sigmoid Links to:

Artificial Neural Networks

Simple artificial neural networks using multilayer perceptron

L Ma (2018). 'Uni-Polar Sigmoid', Datumorphism, 11 April. Available at: https://datumorphism.leima.is/cards/machine-learning/neural-networks/activation-uni-polar-sigmoid/.