Class: DNN::Optimizers::SGD

Inherits:
Optimizer show all
Defined in:
lib/dnn/core/optimizers.rb

Direct Known Subclasses

Nesterov

Instance Attribute Summary collapse

Attributes inherited from Optimizer

#clip_norm, #status

Instance Method Summary collapse

Methods inherited from Optimizer

#dump, from_hash, load, #update

Constructor Details

#initialize(lr = 0.01, momentum: 0, clip_norm: nil) ⇒ SGD

Returns a new instance of SGD.

Parameters:

  • lr (Float) (defaults to: 0.01) —

    Learning rate.

  • momentum (Float) (defaults to: 0) —

    Momentum coefficient.



81
82
83
84
85
86
87
 
# File 'lib/dnn/core/optimizers.rb', line 81

def initialize(lr = 0.01, momentum: 0, clip_norm: nil)
  super(clip_norm: clip_norm)
  @lr = lr
  @momentum = momentum
  @v = {}
  @status = { v: @v }
end

Instance Attribute Details

#lr ⇒ Object

Returns the value of attribute lr.



76
77
78
 
# File 'lib/dnn/core/optimizers.rb', line 76

def lr
  @lr
end

#momentum ⇒ Object

Returns the value of attribute momentum.



77
78
79
 
# File 'lib/dnn/core/optimizers.rb', line 77

def momentum
  @momentum
end

Instance Method Details

#load_hash(hash) ⇒ Object 



105
106
107
 
# File 'lib/dnn/core/optimizers.rb', line 105

def load_hash(hash)
  initialize(hash[:lr], momentum: hash[:momentum], clip_norm: hash[:clip_norm])
end

#to_hash ⇒ Object 



89
90
91
 
# File 'lib/dnn/core/optimizers.rb', line 89

def to_hash
  super(lr: @lr, momentum: @momentum)
end