public ParticleSwarmOptimization(int dimensions, int numberOfParticles, double[] upperBounds, double[] lowerBounds, Func <double[], double> CalculateFitness, Func <double, bool> TargetReached, FitnessMethod FitnessMethod, double velocityFactor = 0.5, double omega = 0.3, double fp = 1, double fg = 0.3)
{
if (dimensions < 1)
{
throw new ArgumentException("Dimensions should be > 1");
}
if (numberOfParticles < 1)
{
throw new ArgumentException("Number of particles should be > 1");
}
for (int i = 0; i < numberOfParticles; i++)
{
Particles.Add(new Particle(dimensions));
}
this.velocityFactor = velocityFactor;
this.omega = omega;
this.fp = fp;
this.fg = fg;
this.CalculateFitness = CalculateFitness;
this.FitnessMethod = FitnessMethod;
this.TargetReached = TargetReached;
this.lowerBounds = lowerBounds;
this.upperBounds = upperBounds;
Initialize(upperBounds, lowerBounds);
}
public bool ShouldUpdateParticleBestFitness(FitnessMethod fitnessMethod)
{
if (fitnessMethod == FitnessMethod.Maximize)
{
return(Fitness > BestFitness);
}
else
{
return(Fitness < BestFitness);
}
}
/// <summary>
/// Konstruktor
/// </summary>
/// <param name='problem'>Anzuwendendes Problem</param>
public Evolution(Problem problem)
{
countGene = problem.countGene;
maxGenerations = problem.maxGenerations;
countIndividuals = problem.countIndividuals;
countChilds = problem.countChilds;
recombinationProbability = problem.recombinationProbability;
InvertOnMutate = problem.InvertOnMutate;
minAllelValue = problem.minAllelValue;
maxAllelValue = problem.maxAllelValue;
SelPropType = problem.SelPropType;
SelType = problem.SelType;
Encryption = problem.Encryption;
TournamentMemberCount = problem.TournamentMemberCount;
sb = problem.Output;
bestFitness = double.MaxValue;
averageFitness = double.MaxValue;
bestFitnessGeneration = 0;
bestSolutions = new List<double>();
bestSolutionsGeneration = new List<int>();
bestList = new List<Genome>(maxGenerations-1);
CalcFitness = problem.CalcFitnessDefault;
switch (Encryption)
{
case Helper.Enums.Encryption.None :
{
Recombine = problem.RecombineDefault;
Mutate = problem.MutateDefault;
break;
}
case Helper.Enums.Encryption.Binary :
{
Recombine = problem.RecombineBinary;
Mutate = problem.MutateBinary;
break;
}
case Helper.Enums.Encryption.Real :
{
Recombine = problem.RecombineReal;
Mutate = problem.MutateReal;
break;
}
}
}
// ======================================== CONSTRUCTOR ==============================================
/// <summary>
/// Instanciate a <see cref="T:NEAT.NEATManager"/>. It sets the configs for it to run correctly.
/// </summary>
/// <param name="inputs">The number of inputs neurons of a neural network.</param>
/// <param name="outputs">The number of outputs of a neural network.</param>
/// <param name="fitnessMethod">The method that computes the fitness of a dead player.</param>
/// <param name="size">The size of the population.</param>
/// <param name="mode">The mode that will be used to run NEAT.</param>
public NEATManager(int inputs, int outputs, FitnessMethod fitnessMethod, int size = 200, NEATMode mode = NEATMode.Separately)
{
Mode = mode;
PopulationSize = size;
if (Mode == NEATMode.Separately)
{
CurrentPlayerIndex = 0;
}
history = new List <NeuralNetwork.ConnectionHistory>();
Players = new List <Player>();
SpeciesList = new List <Species>();
nextInnovationNumber = 0;
for (int i = 0; i < size; i++)
{
Players.Add(new Player(inputs, outputs, ref fitnessMethod));
Players[i].Brain.Mutate(history, ref nextInnovationNumber);
}
Generation = 1;
}
public Player(int inputs, int outputs, ref FitnessMethod fitnessMethod)
{
Brain = new Genome(inputs, outputs);
IsAlive = true;
fitness = fitnessMethod;
}