/// <summary>
/// Calculates the defuzzification value with the CoG (Center of Gravity) technique.
/// </summary>
/// <returns>The defuzzification value.</returns>
public double Defuzzify()
{
double numerator = 0;
double denominator = 0;
// Reset values
foreach (MembershipFunction membershipFunction in this.GetConsequent().MembershipFunctionCollection)
{
membershipFunction.Value = 0;
}
foreach (FuzzyRule fuzzyRule in this.fuzzyRuleCollection)
{
fuzzyRule.Value = Parse(fuzzyRule.Conditions());
string[] tokens = fuzzyRule.Text.Split();
MembershipFunction membershipFunction = this.GetConsequent().MembershipFunctionCollection.Find(tokens[tokens.Length - 1]);
if (fuzzyRule.Value > membershipFunction.Value)
{
membershipFunction.Value = fuzzyRule.Value;
}
}
foreach (MembershipFunction membershipFunction in this.GetConsequent().MembershipFunctionCollection)
{
numerator += membershipFunction.Centorid() * membershipFunction.Area();
denominator += membershipFunction.Area();
}
return(numerator / denominator);
}
