/**
* This method return the output of the model defuzzified
*
* @param x The output
*/
public double output(double[] x) {
FuzzyAlphaCut xfuzzy[] = new FuzzyAlphaCut[x.length];
for (int i = 0; i < x.length; i++)
xfuzzy[i] = new FuzzyAlphaCut(new FuzzyNumberTRIANG(x[i], x[i], x[i]));
R.replaceTerminals(xfuzzy);
IntDouble[] result = R.CrispEval();
if (defuzType == RuleBase.DEFUZCDM) {
double addcenter = 0, addweight = 0;
for (int i = 0; i < result.length; i++) {
addcenter += C.getComponent(result[i].consequent).massCentre() * result[i].weight;
addweight += result[i].weight;
}
if (addweight == 0) return 0; // The output is not covered. This mustn't ocurr.
return addcenter / addweight;
}
if (defuzType == RuleBase.DEFUZMAX) {
double center = 0, maxweight = 0;
for (int i = 0; i < result.length; i++) {
if (result[i].weight >= maxweight) {
maxweight = result[i].weight;
center = C.getComponent(result[i].consequent).massCentre();
}
}
if (maxweight == 0) return 0; // The output is not covered. This musn't ocurr.
return center;
}
return 0;
}
/**
* Constructor. Inicialize a new fuzzy model for GP
*
* @param pR Base rule
* @param c Fuzzy partition
* @param td Type of defuzzifier
*/
public FuzzyGPModel(NodeRuleBase pR, FuzzyPartition c, int td) {
R = (NodeRuleBase) pR.clone();
C = c.clone();
defuzType = td;
}