public NSGAII(MultiObjectiveParameters multiObjectiveParameters)
{
_params = multiObjectiveParameters;
}
/// <summary>
/// Initialize the experiment with some optional XML configutation data.
/// </summary>
public virtual void Initialize(string name, XmlElement xmlConfig)
{
_name = name;
_description = XmlUtils.TryGetValueAsString(xmlConfig, "Description") ?? "";
_comment = XmlUtils.TryGetValueAsString(xmlConfig, "Comment") ?? "";
_populationSize = XmlUtils.TryGetValueAsInt(xmlConfig, "PopulationSize") ?? 100;
_maxGenerations = XmlUtils.TryGetValueAsInt(xmlConfig, "MaxGenerations") ?? 1000;
_activationScheme = ExperimentUtils.CreateActivationScheme(xmlConfig, "Activation");
SeedGenome = XmlUtils.TryGetValueAsString(xmlConfig, "SeedGenome");
try
{
_complexityRegulationStrategy = ExperimentUtils.CreateComplexityRegulationStrategy(xmlConfig, "ComplexityRegulation");
}
catch (ArgumentException e)
{
_logger.Warn(e.Message);
}
_parallelOptions = ExperimentUtils.ReadParallelOptions(xmlConfig);
_multiThreading = XmlUtils.TryGetValueAsBool(xmlConfig, "MultiThreading") ?? true;
_logInterval = XmlUtils.TryGetValueAsInt(xmlConfig, "LogInterval") ?? 10;
// Evolutionary algorithm parameters
_eaParams = new NeatEvolutionAlgorithmParameters();
XmlElement xmlEAParams = xmlConfig.SelectSingleNode("EAParams") as XmlElement;
if (xmlEAParams != null)
{
_eaParams.SpecieCount = XmlUtils.GetValueAsInt(xmlEAParams, "SpecieCount");
_eaParams.ElitismProportion = XmlUtils.GetValueAsDouble(xmlEAParams, "ElitismProportion");
_eaParams.SelectionProportion = XmlUtils.GetValueAsDouble(xmlEAParams, "SelectionProportion");
_eaParams.OffspringAsexualProportion = XmlUtils.GetValueAsDouble(xmlEAParams, "OffspringAsexualProportion");
_eaParams.OffspringSexualProportion = XmlUtils.GetValueAsDouble(xmlEAParams, "OffspringSexualProportion");
_eaParams.InterspeciesMatingProportion = XmlUtils.GetValueAsDouble(xmlEAParams, "InterspeciesMatingProportion");
}
else
{
_logger.Info("EA parameters not found. Using default.");
}
// NEAT Genome parameters
_neatGenomeParams = new NeatGenomeParameters();
// Prevent recurrent connections if the activation scheme is acyclic
_neatGenomeParams.FeedforwardOnly = _activationScheme.AcyclicNetwork;
XmlElement xmlGenomeParams = xmlConfig.SelectSingleNode("GenomeParams") as XmlElement;
if (xmlGenomeParams != null)
{
_neatGenomeParams.ConnectionWeightRange = XmlUtils.GetValueAsDouble(xmlGenomeParams, "ConnectionWeightRange");
_neatGenomeParams.InitialInterconnectionsProportion = XmlUtils.GetValueAsDouble(xmlGenomeParams, "InitialInterconnectionsProportion");
_neatGenomeParams.DisjointExcessGenesRecombinedProbability = XmlUtils.GetValueAsDouble(xmlGenomeParams, "DisjointExcessGenesRecombinedProbability");
_neatGenomeParams.ConnectionWeightMutationProbability = XmlUtils.GetValueAsDouble(xmlGenomeParams, "ConnectionWeightMutationProbability");
_neatGenomeParams.AddNodeMutationProbability = XmlUtils.GetValueAsDouble(xmlGenomeParams, "AddNodeMutationProbability");
_neatGenomeParams.AddConnectionMutationProbability = XmlUtils.GetValueAsDouble(xmlGenomeParams, "AddConnectionMutationProbability");
_neatGenomeParams.DeleteConnectionMutationProbability = XmlUtils.GetValueAsDouble(xmlGenomeParams, "DeleteConnectionMutationProbability");
}
else
{
_logger.Info("Genome parameters not found. Using default.");
}
XmlElement xmlNoveltySearchParams = xmlConfig.SelectSingleNode("NoveltySearch") as XmlElement;
if (xmlNoveltySearchParams != null)
{
_noveltySearchParams = NoveltySearchParameters.ReadXmlProperties(xmlNoveltySearchParams);
}
else
{
_logger.Info("Novelty search parameters not found");
}
XmlElement xmlMultiObjectiveParams = xmlConfig.SelectSingleNode("MultiObjective") as XmlElement;
if (xmlMultiObjectiveParams != null)
{
_multiObjectiveParams = MultiObjectiveParameters.ReadXmlProperties(xmlMultiObjectiveParams);
}
else
{
_logger.Info("Multi objective parameters not found");
}
// Create IBlackBox evaluator.
_evaluator = new TEvaluator();
_evaluator.Initialize(xmlConfig);
_evaluator.NoveltySearchParameters = _noveltySearchParams;
}
