Class: DNN::Layers::Ridge

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

Instance Attribute Summary collapse

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, #compute_output_shape, #forward, from_hash

Constructor Details

#initialize(l2_lambda = 0.01) ⇒ Ridge

Returns a new instance of Ridge.

Parameters:

  • l2_lambda (Float) (defaults to: 0.01) —

    L2 regularizer coefficient.



376
377
378
379
 
# File 'lib/dnn/core/layers/basic_layers.rb', line 376

def initialize(l2_lambda = 0.01)
  super()
  @l2_lambda = l2_lambda
end

Instance Attribute Details

#l2_lambda ⇒ Object

Returns the value of attribute l2_lambda.



373
374
375
 
# File 'lib/dnn/core/layers/basic_layers.rb', line 373

def l2_lambda
  @l2_lambda
end

Instance Method Details

#backward_node(dy) ⇒ Object 



386
387
388
 
# File 'lib/dnn/core/layers/basic_layers.rb', line 386

def backward_node(dy)
  @l2_lambda * @x
end

#forward_node(x) ⇒ Object 



381
382
383
384
 
# File 'lib/dnn/core/layers/basic_layers.rb', line 381

def forward_node(x)
  @x = x
  0.5 * @l2_lambda * (x**2).sum
end

#load_hash(hash) ⇒ Object 



394
395
396
 
# File 'lib/dnn/core/layers/basic_layers.rb', line 394

def load_hash(hash)
  initialize(hash[:l2_lambda])
end

#to_hash ⇒ Object 



390
391
392
 
# File 'lib/dnn/core/layers/basic_layers.rb', line 390

def to_hash
  super(l2_lambda: @l2_lambda)
end