public void Mutation(int cIndex)
{
Chromosome chromosome = Chromosomes[cIndex];
if (chromosome == null)
{
return;
}
int type = GeneticUtils.GetRandom(3);
ushort[] newArray = new ushort[chromosome.Values.Length];
chromosome.Values.CopyTo(newArray, 0);
switch (type)
{
case 0:
int index = GeneticUtils.GetRandom(ChromosomeSize);
int end = GeneticUtils.GetRandom(ChromosomeSize - index) + index;
for (int i = index; i < end; i++)
{
newArray[i] = AvailableValues.GetRandom();
}
if (LeaveInitialValues)
{
Array.Copy(InitialValues, newArray, InitialValues.Length);
}
break;
case 1:
newArray[GeneticUtils.GetRandom(ChromosomeSize)] = 0;
break;
case 2:
int randIndex1 = GeneticUtils.GetRandom(40);
int randIndex2 = GeneticUtils.GetRandom(40);
ushort temp = newArray[randIndex1];
newArray[randIndex1] = newArray[randIndex2];
newArray[randIndex2] = temp;
break;
}
if (LeaveInitialValues)
{
Array.Copy(InitialValues, newArray, InitialValues.Length);
}
Chromosome newChromosome = new Chromosome(Sim, AvailableValues, ChromosomeSize, newArray);
if (newChromosome.Fitness > chromosome.Fitness && !Contains(newChromosome))
{
Chromosomes[cIndex] = newChromosome;
}
}
public void Crossover(Chromosome first, Chromosome second, int pos)
{
if (first == null || second == null)
{
return;
}
int index = GeneticUtils.GetRandom(ChromosomeSize);
int size = GeneticUtils.GetRandom(ChromosomeSize - index);
if (size == ChromosomeSize)
{
size = ChromosomeSize / 2;
}
ushort[] firstArray = new ushort[ChromosomeSize];
ushort[] secondArray = new ushort[ChromosomeSize];
Array.Copy(first.Values, firstArray, ChromosomeSize);
Array.Copy(second.Values, secondArray, ChromosomeSize);
Array.Copy(first.Values, index, secondArray, index, size);
Array.Copy(second.Values, index, firstArray, index, size);
Chromosome firstNew = new Chromosome(Sim, AvailableValues, firstArray.Length, firstArray);
Chromosome secondNew = new Chromosome(Sim, AvailableValues, secondArray.Length, secondArray);
if (LeaveInitialValues)
{
Array.Copy(InitialValues, firstNew.Values, InitialValues.Length);
Array.Copy(InitialValues, secondNew.Values, InitialValues.Length);
firstNew.Fitness = firstNew.Evaluate();
secondNew.Fitness = secondNew.Evaluate();
}
if (firstNew.Fitness > Chromosomes[pos - 1].Fitness && !Contains(firstNew))
{
Chromosomes[pos - 1] = firstNew;
}
if (secondNew.Fitness > Chromosomes[pos].Fitness && !Contains(secondNew))
{
Chromosomes[pos] = secondNew;
}
}