public Generation <GeneType> GenerateNextGeneration(BaseEvaluation <GeneType> CalculatesEvaluation)
{
#region Validation
if (Environment == null || Individuals == null)
{
throw new NullReferenceException();
}
if (Individuals.Count <= 0)
{
throw new Exception("The number of indiciduals must be greater than zero");
}
#endregion Validation
UpdateFitnessOfGeneration(CalculatesEvaluation);
var newGenration = new Generation <GeneType>(NumberOfIndividuals, NumberOfGenesOfIndividuals);
newGenration.Environment = this.Environment;
newGenration.NumberOfGeneration = this.NumberOfGeneration + 1;
newGenration.Individuals = new List <Chromosome <GeneType> >();
while (newGenration.Individuals.Count < NumberOfIndividuals)
{
var fatherId = GetIdOfChromosomeRoulette();
var motherId = GetIdOfChromosomeRoulette();
ValidateParentsId(fatherId, motherId);
while (fatherId == motherId)
{
motherId = GetIdOfRandomChromosome();
ValidateParentsId(fatherId, motherId);
}
#region CheckIfExecuteCrossover
int randPercentage = Random.Next() % 100;
if (randPercentage <= Environment.RateCrossover)
{
var father = GetChromosome(fatherId);
var mother = GetChromosome(motherId);
newGenration.AddIndividualChromosome(ExecuteCrossOver(father, mother));
newGenration.AddIndividualChromosome(ExecuteCrossOver(mother, father));
}
else
{
newGenration.AddIndividualChromosome(GetChromosome(fatherId));
newGenration.AddIndividualChromosome(GetChromosome(motherId));
}
#endregion CheckIfExecuteCrossover
}
#region ExecuteMutation
int randPercentageMutation = Random.Next() % 100;
if (randPercentageMutation <= Environment.RateMutation)
{
Debug.WriteLine("there was a mutation");
int randomChromossomePosition = Random.Next() % Individuals.Count;
Individuals[randomChromossomePosition].PerformsMutation(Random);
}
#endregion ExecuteMutation
return(newGenration);
}
public void DefineInitialPopulation(int numberOfIndividuals, int numberOfGenesOfIndividuals, List <Chromosome <GeneType> > PopulationInitial)
{
if (numberOfIndividuals <= 0)
{
throw new Exception("The number of individuals it's invalid");
}
if (numberOfGenesOfIndividuals <= 0)
{
throw new Exception("The number of genes of individuals it's invalid");
}
if (PopulationInitial == null || PopulationInitial.Count <= 0)
{
throw new Exception("The population initial has not been set");
}
if (PopulationInitial.Count != numberOfIndividuals)
{
throw new Exception("The number of the individuals not is equals to the number of the individuals of population initial");
}
Generation <GeneType> p = new Generation <GeneType>(numberOfIndividuals, numberOfGenesOfIndividuals);
PopulationInitial.ForEach(x => p.AddIndividualChromosome(x));
Population = new List <Generation <GeneType> > {
p
};
}