//CONFERIR
public int finalFitnessComparison(IndividualBase i1, IndividualBase i2)
{
return i1.FinalFitness < i2.FinalFitness ? // se i1 for menor
1 : //retorna 1 (i1)
i2.FinalFitness < i1.FinalFitness ? //se i2 for menor
-1 : //retorna -1 (i2)
0; //se for igual, retorna 0
}
public static int CrowdedComparison(IndividualBase i1, IndividualBase i2)
{
int partial = i1.NonDominationRank < i2.NonDominationRank ? // se i1 for de um front menor
1 : //retorna 1 (i1)
i2.NonDominationRank < i1.NonDominationRank ? //se i2 for de um front menor
-1 : //retorna -1 (i2)
0; //se for igual, retorna a comparação entre as distâncias
if (!partial.Equals(0))
return partial;
return i1.CrowdingDistance.CompareTo(i2.CrowdingDistance);
}
public static void Execute(IndividualBase individual, ProblemBase problem)
{
problem.EvaluateIndividual(individual);
if(!individual.WasEvaluated) {
individual.ObjectivesValuesForMaximization.Add(double.MaxValue);
individual.ObjectivesValuesForNormalization.Add(double.MaxValue);
}
Objective objective = problem.MonoObjectiveGoal;
individual.SetFitnessForObjective(objective);
individual.WasEvaluated = true;
}
public override void Execute(PopulationBase population, out IndividualBase chosenIndividual1, out IndividualBase chosenIndividual2)
{
IndividualBase[] selectedParents = new IndividualBase[2];
for (int individualIdx = 0; individualIdx < 2; ++individualIdx) {
selectedParents[individualIdx] = population.GetRandomIndividual();
for (int selectionIdx = 1; selectionIdx < tourSize; ++selectionIdx) {
IndividualBase randomIndividual = population.GetRandomIndividual();
if (randomIndividual.GetFitnessForObjective(Problem.MonoObjectiveGoal) > selectedParents[individualIdx].GetFitnessForObjective(Problem.MonoObjectiveGoal))
selectedParents[individualIdx] = randomIndividual;
}
}
chosenIndividual1 = selectedParents[0];
chosenIndividual2 = selectedParents[1];
}
public int CompareToByObjective(IndividualBase another, Objective objective)
{
double individualAttributeValue = GetFitnessForObjective(objective);
double anotherIndividualAttributeValue = another.GetFitnessForObjective(objective);
if (anotherIndividualAttributeValue > individualAttributeValue)
{
return(-1);
}
else if (anotherIndividualAttributeValue == individualAttributeValue)
{
return(0);
}
else
{
return(1);
}
}
public static void Execute(IndividualBase individual, ProblemBase problem)
{
problem.EvaluateIndividual(individual);
if (!individual.WasEvaluated)
{
foreach (Objective objective in problem.MultiObjectiveGoal)
{
individual.ObjectivesValuesForMaximization.Add(double.MaxValue);
individual.ObjectivesValuesForNormalization.Add(double.MaxValue);
}
}
foreach (Objective objective in problem.MultiObjectiveGoal)
{
individual.SetFitnessForObjective(objective);
}
individual.WasEvaluated = true;
}
public bool Dominates(IndividualBase another)
{
bool dominatesInAnObjective = false;
foreach (Objective objective in Problem.MultiObjectiveGoal)
{
double individualAttributeValue = GetFitnessForObjective(objective);
double anotherIndividualAttributeValue = another.GetFitnessForObjective(objective);
if (individualAttributeValue > anotherIndividualAttributeValue)
{
dominatesInAnObjective = true;
}
else if (individualAttributeValue < anotherIndividualAttributeValue)
{
return(false);
}
}
if (dominatesInAnObjective)
{
return(true);
}
return(false);
}
public override void Execute(IndividualBase parent1, IndividualBase parent2, out IndividualBase child1, out IndividualBase child2)
{
Problem.CiclicCrossover(parent1, parent2, out child1, out child2);
}
private IndividualBase BestByCrowdedComparison(IndividualBase individual1, IndividualBase individual2)
{
if (individual1.NonDominationRank < individual2.NonDominationRank)
return individual1;
if (individual2.NonDominationRank < individual1.NonDominationRank)
return individual2;
// Se Estão no Mesmo Ranking de Não-Dominância
if (individual1.CrowdingDistance > individual2.CrowdingDistance)
return individual1;
if (individual2.CrowdingDistance > individual1.CrowdingDistance)
return individual2;
// Se têm a Mesma CrowdingDistance
if (Aleatoriety.GetRandomInt(2) == 0)
return individual1;
else
return individual2;
}
public abstract void Execute(PopulationBase population, out IndividualBase chosenIndividual1, out IndividualBase chosenIndividual2);
private IndividualBase BinaryTournment(Population_MultiObjective_AG population)
{
IndividualBase[] contestants = new IndividualBase[2];
contestants[0] = population.GetRandomIndividual();
for (int i = 0; i < 10; ++i) {
contestants[1] = population.GetRandomIndividual();
if ((contestants[0] != contestants[1]) || i == 9) {
break;
}
}
//do {
// contestants[1] = population.GetRandomIndividual();
//} while (contestants[0] == contestants[1]);
return finalFitnessComparison(contestants[0], contestants[1]) >= 0 ? contestants[0] : contestants[1];
}
public abstract void ValidateIndividual(IndividualBase individual);
public abstract string NewSerializeIndividual(IndividualBase individualBase);
public override void Execute(PopulationBase population, out IndividualBase chosenIndividual1, out IndividualBase chosenIndividual2)
{
throw new NotImplementedException();
}
public int CompareToByObjective(IndividualBase another, Objective objective)
{
double individualAttributeValue = GetFitnessForObjective(objective);
double anotherIndividualAttributeValue = another.GetFitnessForObjective(objective);
if (anotherIndividualAttributeValue > individualAttributeValue)
return -1;
else if (anotherIndividualAttributeValue == individualAttributeValue)
return 0;
else
return 1;
}
public bool IsDominatedBy(IndividualBase another)
{
bool dominatedInAnObjective = false;
foreach (Objective objective in Problem.MultiObjectiveGoal) {
double individualAttributeValue = GetFitnessForObjective(objective);
double anotherIndividualAttributeValue = another.GetFitnessForObjective(objective);
if (individualAttributeValue > anotherIndividualAttributeValue)
return false;
else if (individualAttributeValue < anotherIndividualAttributeValue) {
dominatedInAnObjective = true;
}
}
if (dominatedInAnObjective)
return true;
return false;
}
public void AddIndividual(IndividualBase individual)
{
Content.Add(individual);
}
private double DistanceBetween(IndividualBase i1, IndividualBase i2)
{
double distance = 0;
foreach (Objective objective in i1.Problem.MultiObjectiveGoal) {
double difference = i1.GetNormalizedValueForObjective(objective) - i2.GetNormalizedValueForObjective(objective); //calcular a distancia parcial como sendo a diferença
distance += Math.Pow(difference, 2);
}
return distance;
}
public abstract void Execute(IndividualBase parent1, IndividualBase parent2, out IndividualBase child1, out IndividualBase child2);
public abstract void EvaluateIndividual(IndividualBase individual);
public abstract void EvaluateIndividual(IndividualBase individual);
public abstract void MutateIndividual(IndividualBase individual);
public abstract void MutateIndividual(IndividualBase individual);
public abstract void PMXCrossover(IndividualBase parent1, IndividualBase parent2, out IndividualBase child1, out IndividualBase child2);
public abstract void PMXCrossover(IndividualBase parent1, IndividualBase parent2, out IndividualBase child1, out IndividualBase child2);
public abstract string SerializeIndividual(IndividualBase individual);
public abstract void ValidateIndividual(IndividualBase individual);
public void AddIndividual(IndividualBase individual)
{
Content.Add(individual);
}
private IndividualBase BinaryTournment(Population_MultiObjective_AG population)
{
IndividualBase[] contestants = new IndividualBase[2];
contestants[0] = population.GetRandomIndividual();
do {
contestants[1] = population.GetRandomIndividual();
} while (contestants[0] == contestants[1]);
return BestByCrowdedComparison(contestants[0], contestants[1]);
}
