Class: DNN::Activations::Tanh

Inherits:

Layers::Layer

• Object
• Layers::Layer
• DNN::Activations::Tanh

Defined in:

lib/dnn/core/activations.rb

Instance Attribute Summary

Attributes inherited from Layers::Layer

#input_shape, #name

Instance Method Summary

• #backward(dy) ⇒ Object
• #forward(x) ⇒ Object

Methods inherited from Layers::Layer

#build, #built?, call, #call, from_hash, #initialize, #load_hash, #output_shape, #to_hash

Constructor Details

This class inherits a constructor from DNN::Layers::Layer

Instance Method Details

#backward(dy) ⇒ Object

# File 'lib/dnn/core/activations.rb', line 20

def backward(dy)
  dy * (1 - @y ** 2)
end

#forward(x) ⇒ Object

# File 'lib/dnn/core/activations.rb', line 16

def forward(x)
  @y = Xumo::NMath.tanh(x)
end