// New Individual with Identity inherited from 2 parent Individuals.
public Individual(Individual parent1, Individual parent2, string target, Random random)
{
if (parent1.Length != parent2.Length)
throw new Exception("Undefined for sequences of unequal length: Crossover");
this.random = random;
char[] child = new char[parent1.Length];
// combine the parents randomly
for (int i = 0; i < child.Length; i++)
{
if (random.Next(0, 1) == 0)
child[i] = (parent1.IdentityValue.ToCharArray())[i];
else
child[i] = (parent2.IdentityValue.ToCharArray())[i];
}
if (random.NextDouble() < mutationRate)
child = Mutation(child);
this.identityValue = new string(child);
this.fitness = CalculateFitnessValue(target);
}
private void AddToPopulation(Individual newIndividual)
{
population.Add(newIndividual);
census.Add(newIndividual.IdentityValue);
}
private Individual Crossover()
{
Individual newChild = null;
// Loop until we have a child that has never existed before.
do
{
Individual Father = population[random.Next(0, population.Count)];
Individual Mother = null;
// No asexual reproduction
do
{
Mother = population[random.Next(0, population.Count)];
} while (Mother == Father);
newChild = new Individual(Father, Mother, this.FitnessTarget, random);
} while (census.Contains(newChild.IdentityValue));
return newChild;
}