public void Evolve_ManyGenerations_Fast()
{
int movesAhead = 10;
int boardSize = 10;
var selection = new EliteSelection();
var crossover = new OrderedCrossover();
var mutation = new TworsMutation();
var chromosome = new CheckersChromosome(movesAhead, boardSize);
var fitness = new CheckersFitness(new CheckersBoard(boardSize));
var population = new Population(40, 40, chromosome);
var ga = new GeneticAlgorithm(population, fitness, selection, crossover, mutation);
ga.GenerationRan += delegate
{
if (ga.Population.GenerationsNumber % 100 == 0)
{
fitness.Update(ga.Population.BestChromosome as CheckersChromosome);
}
};
ga.Start();
var firstFitness = ((CheckersChromosome)ga.Population.BestChromosome).Fitness;
ga.Termination = new GenerationNumberTermination(2001);
TimeAssert.LessThan(100000, () =>
{
ga.Start();
});
var lastFitness = ((CheckersChromosome)ga.Population.BestChromosome).Fitness;
Assert.LessOrEqual(firstFitness, lastFitness);
}
public void Evolve_ManyGenerations_Fast()
{
int numberOfCities = 40;
var selection = new EliteSelection();
var crossover = new OrderedCrossover();
var mutation = new TworsMutation();
var chromosome = new TspChromosome(numberOfCities);
var fitness = new TspFitness (numberOfCities, 0, 1000, 0, 1000);
var population = new Population (40, 40, chromosome);
var ga = new GeneticAlgorithm(population, fitness, selection, crossover, mutation);
ga.Start();
var firstDistance = ((TspChromosome)ga.Population.BestChromosome).Distance;
ga.Termination = new GenerationNumberTermination (1001);
TimeAssert.LessThan(3000, () =>
{
ga.Start();
});
var lastDistance = ((TspChromosome)ga.Population.BestChromosome).Distance;
Assert.Less(lastDistance, firstDistance);
}
public void Cross_ParentWithNoOrderedGenes_Exception()
{
var target = new OrderedCrossover();
var chromosome1 = MockRepository.GenerateStub<ChromosomeBase>(10);
chromosome1.ReplaceGenes(0, new Gene[] {
new Gene(8),
new Gene(4),
new Gene(7),
new Gene(3),
new Gene(6),
new Gene(2),
new Gene(5),
new Gene(1),
new Gene(9),
new Gene(0)
});
chromosome1.Expect(c => c.CreateNew()).Return(MockRepository.GenerateStub<ChromosomeBase>(10));
var chromosome2 = MockRepository.GenerateStub<ChromosomeBase>(10);
chromosome2.ReplaceGenes(0, new Gene[]
{
new Gene(0),
new Gene(1),
new Gene(2),
new Gene(3),
new Gene(5),
new Gene(5),
new Gene(6),
new Gene(7),
new Gene(8),
new Gene(9),
});
chromosome2.Expect(c => c.CreateNew()).Return(MockRepository.GenerateStub<ChromosomeBase>(10));
ExceptionAssert.IsThrowing(new CrossoverException(target, "The Ordered Crossover (OX1) can be only used with ordered chromosomes. The specified chromosome has repeated genes."), () =>
{
target.Cross(new List<IChromosome>() { chromosome1, chromosome2 });
});
}
public void Cross_ParentsWith10Genes_Cross()
{
var target = new OrderedCrossover();
// 8 4 7 3 6 2 5 1 9 0
var chromosome1 = MockRepository.GenerateStub<ChromosomeBase>(10);
chromosome1.ReplaceGenes(0, new Gene[] {
new Gene(8),
new Gene(4),
new Gene(7),
new Gene(3),
new Gene(6),
new Gene(2),
new Gene(5),
new Gene(1),
new Gene(9),
new Gene(0)
});
chromosome1.Expect(c => c.CreateNew()).Return(MockRepository.GenerateStub<ChromosomeBase>(10));
// 0 1 2 3 4 5 6 7 8 9
var chromosome2 = MockRepository.GenerateStub<ChromosomeBase>(10);
chromosome2.ReplaceGenes(0, new Gene[]
{
new Gene(0),
new Gene(1),
new Gene(2),
new Gene(3),
new Gene(4),
new Gene(5),
new Gene(6),
new Gene(7),
new Gene(8),
new Gene(9),
});
chromosome2.Expect(c => c.CreateNew()).Return(MockRepository.GenerateStub<ChromosomeBase>(10));
// Child one: 0 4 7 3 6 2 5 1 8 9
// Child two: 8 2 1 3 4 5 6 7 9 0
var rnd = MockRepository.GenerateMock<IRandomization>();
rnd.Expect(r => r.GetUniqueInts(2, 0, 10)).Return(new int[] { 7, 3 });
RandomizationProvider.Current = rnd;
IList<IChromosome> actual = null; ;
TimeAssert.LessThan(40, () =>
{
actual = target.Cross(new List<IChromosome>() { chromosome1, chromosome2 });
});
Assert.AreEqual(2, actual.Count);
Assert.AreEqual(10, actual[0].Length);
Assert.AreEqual(10, actual[1].Length);
Assert.AreEqual(10, actual[0].GetGenes().Distinct().Count());
Assert.AreEqual(10, actual[1].GetGenes().Distinct().Count());
Assert.AreEqual(0, actual[0].GetGene(0).Value);
Assert.AreEqual(4, actual[0].GetGene(1).Value);
Assert.AreEqual(7, actual[0].GetGene(2).Value);
Assert.AreEqual(3, actual[0].GetGene(3).Value);
Assert.AreEqual(6, actual[0].GetGene(4).Value);
Assert.AreEqual(2, actual[0].GetGene(5).Value);
Assert.AreEqual(5, actual[0].GetGene(6).Value);
Assert.AreEqual(1, actual[0].GetGene(7).Value);
Assert.AreEqual(8, actual[0].GetGene(8).Value);
Assert.AreEqual(9, actual[0].GetGene(9).Value);
Assert.AreEqual(8, actual[1].GetGene(0).Value);
Assert.AreEqual(2, actual[1].GetGene(1).Value);
Assert.AreEqual(1, actual[1].GetGene(2).Value);
Assert.AreEqual(3, actual[1].GetGene(3).Value);
Assert.AreEqual(4, actual[1].GetGene(4).Value);
Assert.AreEqual(5, actual[1].GetGene(5).Value);
Assert.AreEqual(6, actual[1].GetGene(6).Value);
Assert.AreEqual(7, actual[1].GetGene(7).Value);
Assert.AreEqual(9, actual[1].GetGene(8).Value);
Assert.AreEqual(0, actual[1].GetGene(9).Value);
}
