private void Elitism()
{
var new_generation = new List <Chromosome>();
var elitism_start = (int)(PopulationSize * ElitismRatio);
for (int i = 0; i < elitism_start; i++)
{
new_generation.Add(Population.Chromosomes[i]);
}
for (int i = elitism_start; i < PopulationSize; i++)
{
int i1 = rnd.Next() % (Population.Chromosomes.Count / 2);
int i2 = rnd.Next() % (Population.Chromosomes.Count / 2);
var ch1_data = Population.Chromosomes[i1].Data;
var ch2_data = Population.Chromosomes[i2].Data;
List <object> cross_chromosome_data = null;
int axis = rnd.Next(1, Population.Chromosomes.First().Data.Count);
switch (CrossoverType)
{
case CrossoverType.OnePointCrossover: cross_chromosome_data = Crossover.OnePointCrossover(ch1_data, ch2_data, axis).Item1; break;
case CrossoverType.UniformCrossover: cross_chromosome_data = Crossover.UniformCrossover(ch1_data, ch2_data).Item1; break;
case CrossoverType.PMX: cross_chromosome_data = Crossover.PMX(ch1_data, ch2_data); break;
}
var cross_chromosome = new Chromosome(cross_chromosome_data);
new_generation.Add(cross_chromosome);
}
Population.Chromosomes = new_generation;
}