/// <summary>
/// Create a new instance of <see cref="NeatEvolutionAlgorithm{T}"/> for the given neat experiment.
/// </summary>
/// <param name="neatExperiment">A neat experiment instance; this conveys everything required to create a new evolution algorithm instance that is ready to be run.</param>
/// <returns>A new instance of <see cref="NeatEvolutionAlgorithm{T}"/>.</returns>
public static NeatEvolutionAlgorithm <double> CreateNeatEvolutionAlgorithm(
INeatExperiment <double> neatExperiment)
{
// Create a genomeList evaluator based on the experiment's configuration settings.
var genomeListEvaluator = CreateGenomeListEvaluator(neatExperiment);
// Create a MetaNeatGenome.
var metaNeatGenome = CreateMetaNeatGenome(neatExperiment);
// Create an initial population of genomes.
NeatPopulation <double> neatPop = NeatPopulationFactory <double> .CreatePopulation(
metaNeatGenome,
connectionsProportion : neatExperiment.InitialInterconnectionsProportion,
popSize : neatExperiment.PopulationSize);
// Create a speciation strategy based on the experiment's configuration settings.
var speciationStrategy = CreateSpeciationStrategy(neatExperiment);
// Create an instance of the default connection weight mutation scheme.
var weightMutationScheme = WeightMutationSchemeFactory.CreateDefaultScheme(neatExperiment.ConnectionWeightScale);
// Pull all of the parts together into an evolution algorithm instance.
var ea = new NeatEvolutionAlgorithm <double>(
neatExperiment.NeatEvolutionAlgorithmSettings,
genomeListEvaluator,
speciationStrategy,
neatPop,
neatExperiment.ComplexityRegulationStrategy,
neatExperiment.ReproductionAsexualSettings,
neatExperiment.ReproductionSexualSettings,
weightMutationScheme);
return(ea);
}
/// <summary>
/// Create a new NeatPopulation with randomly initialised genomes.
/// Genomes are randomly initialised by giving each a random subset of all possible connections between the input and output layer.
/// </summary>
/// <param name="metaNeatGenome">Genome metadata, e.g. the number of input and output nodes that each genome should have.</param>
/// <param name="connectionsProportion">The proportion of possible connections between the input and output layers, to create in each new genome.</param>
/// <param name="popSize">Population size. The number of new genomes to create.</param>
/// <returns>A new instance of <see cref="NeatPopulation{T}"/>.</returns>
public static NeatPopulation <T> CreatePopulation(
MetaNeatGenome <T> metaNeatGenome,
double connectionsProportion, int popSize)
{
var factory = new NeatPopulationFactory <T>(metaNeatGenome, connectionsProportion, RandomDefaults.CreateRandomSource());
return(factory.CreatePopulation(popSize));
}
