public void ItHasADefaultName()
{
var chromo = new OrderedChromosome();
Assert.AreEqual(FirstName.Kanan, chromo.FirstName);
Assert.AreEqual(LastName.Jarrus, chromo.LastName);
}
public void ItsConstructorDeterminesTheGeneSize()
{
var random = GATestHelper.GetRandomInteger(1, 255);
var doubleChromo = new OrderedChromosome(random);
Assert.AreEqual(random, doubleChromo.Genes.Length);
}
protected override Chromosome Perform(Chromosome father, Chromosome mother, GAConfiguration settings)
{
var geneCount = father.Genes.Length;
var child = new OrderedChromosome(geneCount);
var crossoverPoint = settings.GetRandomInteger(1, father.Genes.Length - 1);
var seen = new HashSet <Gene>();
for (int i = 0; i < crossoverPoint; i++)
{
child.Genes[i] = father.Genes[i];
seen.Add(father.Genes[i]);
}
var count = 0;
for (int i = 0; i < geneCount; i++)
{
if (!seen.Contains(mother.Genes[i]))
{
child.Genes[crossoverPoint + count] = mother.Genes[i];
seen.Add(mother.Genes[i]);
count++;
}
}
return(child);
}
public void ItCanDetermineIfAChromosomeItShouldRetireByAge()
{
_config.RetirementStrategy = RetirementStrategy.MaxAge;
var chromosome = new OrderedChromosome(8);
chromosome.Age = 10;
Assert.AreEqual(true, chromosome.ShouldRetire(_config));
}
public void ItThrowsAnErrorIfTheMotherIsNull()
{
var father = new OrderedChromosome(GATestHelper.GetRandomInteger(16, 32));
var mother = new OrderedChromosome(GATestHelper.GetRandomInteger(1, 8));
var singlePointCrossover = new SinglePointCrossover();
singlePointCrossover.Execute(father, null, GATestHelper.GetTravelingSalesmanDefaultConfiguration());
}
public void ItThrowsAnErrorIfTheParentsAreNotLargeEnough()
{
var father = new OrderedChromosome(1);
var mother = new OrderedChromosome(1);
var singlePointCrossover = new SinglePointCrossover();
singlePointCrossover.Execute(father, mother, GATestHelper.GetTravelingSalesmanDefaultConfiguration());
}
public void ItDoesNotThrowErrorsIfValidationPasses()
{
var size = GATestHelper.GetRandomInteger(16, 256);
var father = new OrderedChromosome(size);
var mother = new OrderedChromosome(size);
var singlePointCrossover = new SinglePointCrossover();
singlePointCrossover.Execute(father, mother, GATestHelper.GetTravelingSalesmanDefaultConfiguration());
}
protected override Chromosome Perform(Chromosome father, Chromosome mother, GAConfiguration settings)
{
var geneCount = father.Genes.Length;
DetermineCycle(father, mother);
var child = new OrderedChromosome(mother.Genes);
PlaceCycleInsideOfChild(father, child);
return(child);
}
public void ItCanDetermineIfAChromosomeItShouldRetireByChildrenSired()
{
_config.RetirementStrategy = RetirementStrategy.MaxChildren;
_config.MaxRetirement = 9;
var chromosome = new OrderedChromosome(8);
chromosome.Age = 0;
chromosome.Children = 100;
Assert.AreEqual(true, chromosome.ShouldRetire(_config));
}
private Chromosome[] GetZeroesAndOnesChromosomes()
{
var chromosomes = new Chromosome[100];
for (int i = 0; i < 100; i++)
{
chromosomes[i] = new OrderedChromosome(8);
chromosomes[i].FitnessScore = _random.Next(0, 2);
}
return(chromosomes);
}
private Chromosome[] GetStepChromosomes(int offset = 0)
{
var chromosomes = new Chromosome[100];
for (int i = 0; i < 100; i++)
{
chromosomes[i] = new OrderedChromosome(8);
chromosomes[i].FitnessScore = i + offset;
}
return(chromosomes);
}
private Chromosome GetRandomNamedChromosome()
{
var chromo = new OrderedChromosome();
var lastName = NameGenerator.GetLastName(_random);
while (_lastNamesUsed.Contains(lastName))
{
lastName = NameGenerator.GetLastName(_random);
}
chromo.FirstName = NameGenerator.GetFirstName(_random);
chromo.LastName = lastName;
return(chromo);
}
public void ItCanDetermineObjectsAreEqualByReference()
{
var data = GetSampleDataset();
var chromosomeOne = new OrderedChromosome(data);
var tempdata = data[0];
data[0] = data[1];
data[1] = tempdata;
var chromosomeTwo = new OrderedChromosome(data);
var areEqual = chromosomeOne.Genes[0] == chromosomeTwo.Genes[1];
Assert.AreEqual(chromosomeOne.Genes[0], chromosomeTwo.Genes[1]);
Console.Out.WriteLine("");
}
public static Chromosome[] GenerateOrderedPopulation(GAConfiguration configuration, params Gene[] possibleValues)
{
if (possibleValues == null || possibleValues.Length <= 1 || configuration == null)
{
throw new ArgumentException("Invalid parameters passed to the genome generator");
}
var list = new Chromosome[configuration.PopulationSize];
for (int i = 0; i < configuration.PopulationSize; i++)
{
possibleValues.Shuffle(configuration.RandomPool);
list[i] = new OrderedChromosome((Gene[])possibleValues.Clone());
list[i].FirstName = NameGenerator.GetFirstName(configuration.RandomFirstNameSeed);
list[i].LastName = NameGenerator.GetLastName(configuration.RandomLastNameSeed);
}
return(list);
}
public List <Chromosome> DetermineChildren(Chromosome father, Chromosome mother, int firstCrossover, int secondCrossover)
{
_firstCrossoverPoint = firstCrossover;
_secondCrossoverPoint = secondCrossover;
var parent1Genes = father.Genes;
var parent1MappingSection = parent1Genes.Skip(_firstCrossoverPoint).Take((_secondCrossoverPoint - _firstCrossoverPoint) + 1).ToArray();
var parent2Genes = mother.Genes;
var parent2MappingSection = parent2Genes.Skip(_firstCrossoverPoint).Take((_secondCrossoverPoint - _firstCrossoverPoint) + 1).ToArray();
var offspring1 = new OrderedChromosome(father.Genes);
var offspring2 = new OrderedChromosome(mother.Genes);
offspring2.ReplaceGenes(_firstCrossoverPoint, parent1MappingSection);
offspring1.ReplaceGenes(_firstCrossoverPoint, parent2MappingSection);
var length = father.Genes.Length;
for (int i = 0; i < length; i++)
{
if (i >= _firstCrossoverPoint && i <= _secondCrossoverPoint)
{
continue;
}
var geneForUffspring1 = GetGeneNotInMappingSection(parent1Genes[i], parent2MappingSection, parent1MappingSection);
offspring1.ReplaceGenes(i, geneForUffspring1);
var geneForoffspring2 = GetGeneNotInMappingSection(parent2Genes[i], parent1MappingSection, parent2MappingSection);
offspring2.ReplaceGenes(i, geneForoffspring2);
}
var children = new List <Chromosome>();
children.Add(offspring1);
children.Add(offspring2);
return(children);
}
protected override Chromosome Perform(Chromosome father, Chromosome mother, GAConfiguration settings)
{
var geneCount = father.Genes.Length;
var child = new OrderedChromosome(geneCount);
var seen = new HashSet <Gene>();
for (int i = 0; i < geneCount; i++)
{
if (IsOdd(i))
{
for (int k = 0; k < geneCount; k++)
{
if (!seen.Contains(mother.Genes[k]))
{
child.Genes[i] = mother.Genes[k];
seen.Add(child.Genes[i]);
break;
}
}
}
else
{
for (int k = 0; k < geneCount; k++)
{
if (!seen.Contains(father.Genes[k]))
{
child.Genes[i] = father.Genes[k];
seen.Add(child.Genes[i]);
break;
}
}
}
}
return(child);
}
public void ItCanOutputGenesToCommaDelimitedStringWhenEmpty()
{
var ExampleGeneChromo = new OrderedChromosome();
Assert.AreEqual("", ExampleGeneChromo.ToString());
}
