Class: Fuzzyrb::MamdaniImplication

Inherits:
FuzzyImplication show all
Defined in:
lib/fuzzy_implication.rb

Overview

Regular implication. Result is defuzzification of fuzzy set composed of rules’ conclusions scaled by T-norm.

Instance Method Summary collapse

Methods inherited from FuzzyImplication

#initialize

Constructor Details

This class inherits a constructor from Fuzzyrb::FuzzyImplication

Instance Method Details

#evaluate(values, params) ⇒ Object

Evaluates the rule. Params includes FuzzyRule params and:

  • :defuzzification which can be :CoG for center of gravity of :firstMaximum for first maximum.



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# File 'lib/fuzzy_implication.rb', line 34

def evaluate(values, params)
result = @rules.map { |rule|
  rule.evaluate(values, params)
  }.inject { |s, r| s + r }
  if params[:defuzzification] == :CoG
    return result.centerOfGravity
  elsif params[:defuzzification] == :firstMaximum
    return result.firstMaximum
  else
    raise Exception.new("Invalid defuzzification method")
  end
end