Class: Chainer::Summary

Inherits:
Object
  • Object
show all
Defined in:
lib/chainer/reporter.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Summary

Returns a new instance of Summary.



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# File 'lib/chainer/reporter.rb', line 67

def initialize
  @x = 0
  @x2 = 0
  @n = 0
end

Instance Method Details

#add(value) ⇒ Object

Adds a scalar value. Args:

value: Scalar value to accumulate.



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# File 'lib/chainer/reporter.rb', line 76

def add(value)
  @x += value
  @x2 += value * value
  @n += 1
end

#compute_mean ⇒ Object

Computes the mean.



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# File 'lib/chainer/reporter.rb', line 83

def compute_mean
  @x.to_f / @n
end

#make_statistics ⇒ Object

Computes and returns the mean and standard deviation values. Returns:

array: Mean and standard deviation values.



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# File 'lib/chainer/reporter.rb', line 90

def make_statistics
  mean = @x / @n
  var = @x2 / @n - mean * mean
  std = Math.sqrt(var)
  [mean, std]
end