Class: DNN::Initializers::Initializer

Inherits:
Object
  • Object
show all
Defined in:
lib/dnn/core/initializers.rb

Direct Known Subclasses

Const, He, RandomNormal, RandomUniform, Xavier, Zeros

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(seed: false) ⇒ Initializer

Returns a new instance of Initializer.

Parameters:

  • seed (Boolean | Integer) (defaults to: false) —

    Seed of random number used for initialize parameter. Set true to determine seed as random.



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

def initialize(seed: false)
  @seed = seed == true ? rand(1 << 31) : seed
end

Class Method Details

.from_hash(hash) ⇒ Object

Raises:



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# File 'lib/dnn/core/initializers.rb', line 5

def self.from_hash(hash)
  return nil unless hash
  initializer_class = DNN.const_get(hash[:class])
  initializer = initializer_class.allocate
  raise DNNError, "#{initializer.class} is not an instance of #{self} class." unless initializer.is_a?(self)
  initializer.load_hash(hash)
  initializer
end

Instance Method Details

#init_param(layer, param) ⇒ Object

Initialization of learning parameters.

Parameters:

Raises:

  • (NotImplementedError) 


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# File 'lib/dnn/core/initializers.rb', line 23

def init_param(layer, param)
  raise NotImplementedError, "Class '#{self.class.name}' has implement method 'init_param'"
end

#load_hash(hash) ⇒ Object 



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# File 'lib/dnn/core/initializers.rb', line 33

def load_hash(hash)
  initialize
end

#to_hash(merge_hash = nil) ⇒ Object 



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# File 'lib/dnn/core/initializers.rb', line 27

def to_hash(merge_hash = nil)
  hash = { class: self.class.name, seed: @seed }
  hash.merge!(merge_hash) if merge_hash
  hash
end