Class: DNN::Layers::Softplus

Inherits:
Layer
  • Object
show all
Includes:
LayerNode
Defined in:
lib/dnn/core/layers/activations.rb

Instance Attribute Summary

Attributes inherited from Layer

#input_shape

Instance Method Summary collapse

Methods included from LayerNode

#backward, #forward

Methods inherited from Layer

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

Constructor Details

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

Instance Method Details

#backward_node(dy) ⇒ Object 



49
50
51
 
# File 'lib/dnn/core/layers/activations.rb', line 49

def backward_node(dy)
  dy * (1 / (1 + Xumo::NMath.exp(-@x)))
end

#forward_node(x) ⇒ Object 



44
45
46
47
 
# File 'lib/dnn/core/layers/activations.rb', line 44

def forward_node(x)
  @x = x
  Xumo::NMath.log(1 + Xumo::NMath.exp(x))
end