Method: TensorStream::MathHelper#sigmoid

Defined in:
lib/tensor_stream/evaluator/operation_helpers/math_helper.rb

#sigmoid(val) ⇒ Object

Calculates value of y = 1.0 / ( 1.0 + exp( -x ) )



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# File 'lib/tensor_stream/evaluator/operation_helpers/math_helper.rb', line 5

def sigmoid(val)
  1 / (1 + Math.exp(-val))
end