Source

Softsign#

A smooth sigmoid-shaped function that squashes the input between -1 and 1.

Parameters#

This activation function does not have any parameters.

Example#

use Rubix\ML\NeuralNet\ActivationFunctions\Softsign;

$activationFunction = new Softsign();

References#

  • X. Glorot et al. (2010). Understanding the Difficulty of Training Deep Feedforward Neural Networks.