Module: Kder::Statistics

Defined in:
lib/util/statistics.rb

Constant Summary collapse

SQ2PI = 
Math.sqrt(2 * Math::PI)

Class Method Summary collapse

Class Method Details

.custom_pdf(x, sigma = 1.0) ⇒ Object

Normal pdf with a custom sigma value, still centered around 0.



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# File 'lib/util/statistics.rb', line 5

def self.custom_pdf(x, sigma = 1.0)
  mean = 0 
  (1.0/( sigma*SQ2PI))*Math::exp(-0.5*((x-mean)/sigma)**2)
end