public AbstractUtilityFunctionsSet<S> createUtilityFunction(
List<Double> referencePoint, double[][] weights) {
weights = WeightVector.invertWeights(weights, true);
ASFWASFGA<S> aux = new ASFWASFGA<>(weights, referencePoint);
return aux;
}
public GWASFGA(
Problem<S> problem,
int populationSize,
int maxIterations,
CrossoverOperator<S> crossoverOperator,
MutationOperator<S> mutationOperator,
SelectionOperator<List<S>, S> selectionOperator,
SolutionListEvaluator<S> evaluator) {
super(
problem,
populationSize,
maxIterations,
crossoverOperator,
mutationOperator,
selectionOperator,
evaluator,
null);
setMaxPopulationSize(populationSize);
double[][] weights = WeightVector.initUniformWeights2D(0.005, getMaxPopulationSize());
int halfVectorSize = weights.length / 2;
int evenVectorsSize = (weights.length % 2 == 0) ? halfVectorSize : (halfVectorSize + 1);
int oddVectorsSize = halfVectorSize;
double[][] evenVectors = new double[evenVectorsSize][getProblem().getNumberOfObjectives()];
double[][] oddVectors = new double[oddVectorsSize][getProblem().getNumberOfObjectives()];
int index = 0;
for (int i = 0; i < weights.length; i = i + 2) evenVectors[index++] = weights[i];
index = 0;
for (int i = 1; i < weights.length; i = i + 2) oddVectors[index++] = weights[i];
this.achievementScalarizingNadir = createUtilityFunction(this.getNadirPoint(), evenVectors);
this.achievementScalarizingUtopia = createUtilityFunction(this.getReferencePoint(), oddVectors);
}