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BNNSActivationFunctionSELU

An activation function that evaluates the scaled exponential linear units (SELU) on its input.

Declaration

var BNNSActivationFunctionSELU: BNNSActivationFunction { get }

Discussion

This constant defines an activation function that returns values using the following operation:

// λ and ɑ have the values given by Klambauer, Unterthiner and Mayr 
// (~1.0507 and ~1.6733, respectively)

if x < 0
    λɑ(exp(x)-1)
else
    λx

The following illustrates the output that the activation function generates from inputs in the range -10...10:

[Image]

See Also

Raw Values