private double Centroid(List <FuzzyNumber> nums, LingVariable variable) { double stepN = 17; double start = variable.Range[0]; double end = variable.Range[1]; double step = (end - start) / (stepN - 1); double uppersum = 0; double lowersum = 0; for (int i = 0; i < nums.Count; i++) { MemberShipFunction mf = variable.getMFbyName(nums[i].MemberShipName); for (double j = start; j < end; j = step + j) { double value = mf.getOutput(j); if (value > 0) { if (value < nums[i].FuzzyValue) { uppersum = value * j + uppersum; lowersum = value + lowersum; } else { uppersum = nums[i].FuzzyValue * j + uppersum; lowersum = nums[i].FuzzyValue + lowersum; } } } } return(uppersum / lowersum); }
private double MaxHeightDeFuzzifcation(List <FuzzyNumber> nums, LingVariable variable) { double lowvalue = 0; double highvalue = 0; for (int i = 0; i < nums.Count; i++) { MemberShipFunction mf = variable.getMFbyName(nums[i].MemberShipName); highvalue = ((mf.CenterOfMass * getImplication(nums[i].FuzzyValue, mf.getOutput(mf.CenterOfMass))) / (mf.Spread * mf.Spread)) + highvalue; lowvalue = (getImplication(nums[i].FuzzyValue, mf.getOutput(mf.CenterOfMass)) / (mf.Spread * mf.Spread)) + lowvalue; } return(highvalue / lowvalue); }
public List <FuzzyNumber> Fuzzification(double value, LingVariable variable) { List <FuzzyNumber> set = new List <FuzzyNumber>(); List <MemberShipFunction> MFs = variable.MFs; for (int i = 0; i < variable.MFs.Count; i++) { double v = MFs[i].getOutput(value); if (v > 0) { set.Add(new FuzzyNumber(MFs[i].Name, v)); } } return(set); }
public double DeFuzzification(List <FuzzySet> Sets, LingVariable variable) { double value = 0; for (int i = 0; i < Sets.Count; i++) { //if (Sets[i].Variable == variable.Name) //{ if (_configuration.DefuzzificationType == DefuzzifcationType.ModifiedHeight) { value = MaxHeightDeFuzzifcation(Sets[i].Set, variable); } else if (_configuration.DefuzzificationType == DefuzzifcationType.Centroid) { value = Centroid(Sets[i].Set, variable); } //} } return(value); }