Class: DNN::Layers::Reshape

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

Instance Attribute Summary

Attributes inherited from Layer

#input_shape, #output_shape

Instance Method Summary collapse

Methods included from LayerNode

#forward

Methods inherited from Layer

#<<, #build, #built?, #call, call, #clean, #forward, from_hash

Constructor Details

#initialize(shape) ⇒ Reshape

Returns a new instance of Reshape.



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# File 'lib/dnn/core/layers/basic_layers.rb', line 308

def initialize(shape)
  super()
  @shape = shape
end

Instance Method Details

#_backward_cpu(dy) ⇒ Object 



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# File 'lib/dnn/core/layers/basic_layers.rb', line 337

def _backward_cpu(dy)
  dy.reshape(dy.shape[0], *@input_shape)
end

#_backward_gpu(dy) ⇒ Object 



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# File 'lib/dnn/core/layers/basic_layers.rb', line 345

def _backward_gpu(dy)
  dy.flatten.reshape(dy.shape[0], *@input_shape)
end

#_forward_cpu(x) ⇒ Object 



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# File 'lib/dnn/core/layers/basic_layers.rb', line 333

def _forward_cpu(x)
  x.reshape(x.shape[0], *@output_shape)
end

#_forward_gpu(x) ⇒ Object 



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# File 'lib/dnn/core/layers/basic_layers.rb', line 341

def _forward_gpu(x)
  x.flatten.reshape(x.shape[0], *@output_shape)
end

#backward_node(dy) ⇒ Object 



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# File 'lib/dnn/core/layers/basic_layers.rb', line 325

def backward_node(dy)
  if DNN.use_cumo?
    _backward_gpu(dy)
  else
    _backward_cpu(dy)
  end
end

#compute_output_shape ⇒ Object 



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# File 'lib/dnn/core/layers/basic_layers.rb', line 313

def compute_output_shape
  @shape
end

#forward_node(x) ⇒ Object 



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# File 'lib/dnn/core/layers/basic_layers.rb', line 317

def forward_node(x)
  if DNN.use_cumo?
    _forward_gpu(x)
  else
    _forward_cpu(x)
  end
end

#load_hash(hash) ⇒ Object 



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# File 'lib/dnn/core/layers/basic_layers.rb', line 353

def load_hash(hash)
  initialize(hash[:shape])
end

#to_hash ⇒ Object 



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# File 'lib/dnn/core/layers/basic_layers.rb', line 349

def to_hash
  super(shape: @shape)
end