// ルーレット選択
public void Reproduce_Roulette(IntArrayChromosomes _intarraychromosomes)
{
_intarraychromosomes.SortChromosomes();
var random = new System.Random();
double scoreSum = 0;
for (int i = 0; i < _intarraychromosomes.GetPopulation(); i++)
{
scoreSum += _intarraychromosomes.ReadScore(i);
}
for (int i = ELITE_POPULATION; i < _intarraychromosomes.GetPopulation() &&
_intarraychromosomes.GetPopulation() > POPULATION; i++)
{
if (random.NextDouble() <= 1 - _intarraychromosomes.ReadScore(i) / scoreSum)
{
_intarraychromosomes.RemoveChromosome(i);
}
}
int population = _intarraychromosomes.GetPopulation();
for (int i = 0; i < population - POPULATION; i++)
{
_intarraychromosomes.RemoveChromosome(random.Next(ELITE_POPULATION, _intarraychromosomes.GetPopulation()));
}
}
// 選択・淘汰
//ランキング選択
public void Reproduce_Ranking(IntArrayChromosomes _intArrayChromosomes)
{
_intArrayChromosomes.SortChromosomes();
var random = new System.Random();
int population = _intArrayChromosomes.GetPopulation();
for (int i = 0; i < population - POPULATION; i++)
{
int individual = (int)(DensityFunction(random) * _intArrayChromosomes.GetPopulation()) + ELITE_POPULATION;
if (individual >= POPULATION)
{
individual = POPULATION - 1;
}
_intArrayChromosomes.RemoveChromosome(individual);
}
}