protected override Chromosome Perform(Chromosome father, Chromosome mother, GAConfiguration configuration)
{
var geneCount = father.Genes.Length;
var childOne = new UnorderedChromosome(geneCount);
var childTwo = new UnorderedChromosome(geneCount);
var crossoverPoint = configuration.GetRandomInteger(1, father.Genes.Length - 1);
for (int i = 0; i < geneCount; i++)
{
if (i < crossoverPoint)
{
childOne.Genes[i] = father.Genes[i];
childTwo.Genes[i] = mother.Genes[i];
}
else
{
childOne.Genes[i] = mother.Genes[i];
childTwo.Genes[i] = father.Genes[i];
}
}
if (configuration.GetNextDouble() < 0.5)
{
return(childOne);
}
else
{
return(childTwo);
}
}
public static Chromosome[] GenerateUnorderedPopulation(GAConfiguration configuration, Type unorderedGeneType)
{
if (configuration == null || unorderedGeneType == null)
{
throw new ArgumentException("Invalid parameters passed to the genome generator");
}
var isUnorderedGene = typeof(UnorderedGene).IsAssignableFrom(unorderedGeneType);
if (!isUnorderedGene)
{
throw new ArgumentException("Can not create an unordered population from a non-unordered gene type.");
}
if (configuration.GeneSize <= 1)
{
throw new ArgumentException("Gene size must be larger than 1.");
}
var list = new Chromosome[configuration.PopulationSize];
for (int i = 0; i < configuration.PopulationSize; i++)
{
list[i] = new UnorderedChromosome(configuration.GeneSize, unorderedGeneType, configuration.Random);
list[i].FirstName = NameGenerator.GetFirstName(configuration.RandomFirstNameSeed);
list[i].LastName = NameGenerator.GetLastName(configuration.RandomLastNameSeed);
}
return(list);
}
public void ItCanDetermineEquality()
{
var randomSeed = 22;
var c1 = new UnorderedChromosome(10, typeof(PhraseGene), new Random(randomSeed));
var c2 = new UnorderedChromosome(10, typeof(PhraseGene), new Random(randomSeed));
Assert.AreEqual(true, c1 == c2);
}
public void ItCanMakeAnUnorderedChromosome()
{
var random = new Random();
var phraseType = typeof(PhraseGene);
var c = new UnorderedChromosome(8, phraseType, random);
Assert.AreEqual(8, c.Genes.Length);
}
private Chromosome[] GetUnorderedChromosomes(GAConfiguration config)
{
var chromosomes = new Chromosome[config.PopulationSize];
for (int i = 0; i < config.PopulationSize; i++)
{
chromosomes[i] = new UnorderedChromosome(PhraseSolution.Shakespeare.Length, typeof(PhraseGene), _random);
}
return(chromosomes);
}
public void ItCanDetermineAFitnessScore()
{
var random = new Random(22);
var length = PhraseSolution.Shakespeare.Length;
var chromosome = new UnorderedChromosome(length, typeof(PhraseGene), random);
var solution = new PhraseSolution();
var distance = solution.GetFitnessScoreFor(chromosome);
Assert.AreNotEqual(0, distance);
}
