/// <summary>
/// Construct with default set of parameters.
/// </summary>
public NeatGenomeParameters()
{
_activationFn = SteepenedSigmoid.__DefaultInstance;
_connectionWeightRange = DefaultConnectionWeightRange;
_initialInterconnectionsProportion = DefaultInitialInterconnectionsProportion;
_disjointExcessGenesRecombineProbability = DefaultDisjointExcessGenesRecombineProbability;
_connectionWeightMutationProbability = DefaultConnectionWeightMutationProbability;
_addNodeMutationProbability = DefaultAddNodeMutationProbability;
_addConnectionMutationProbability = DefaultAddConnectionMutationProbability;
_nodeAuxStateMutationProbability = DefaultNodeAuxStateMutationProbability;
_deleteConnectionMutationProbability = DefaultDeleteConnectionMutationProbability;
_rouletteWheelLayout = CreateRouletteWheelLayout();
_rouletteWheelLayoutNonDestructive = CreateRouletteWheelLayout_NonDestructive();
// Create a connection weight mutation scheme.
_connectionMutationInfoList = CreateConnectionWeightMutationScheme_Default();
// No fitness history.
_fitnessHistoryLength = 0;
}
/// <summary>
/// Returns the connection weight mutation scheme from SharpNEAT version 1.x
/// </summary>
private ConnectionMutationInfoList CreateConnectionWeightMutationScheme_SharpNEAT1()
{
ConnectionMutationInfoList list = new ConnectionMutationInfoList(5);
list.Add(new ConnectionMutationInfo(0.125, ConnectionPerturbanceType.JiggleUniform,
ConnectionSelectionType.Proportional, 0.5, 0, 0.05, 0.0));
list.Add(new ConnectionMutationInfo(0.125, ConnectionPerturbanceType.JiggleUniform,
ConnectionSelectionType.Proportional, 0.1, 0, 0.05, 0.0));
list.Add(new ConnectionMutationInfo(0.125, ConnectionPerturbanceType.JiggleUniform,
ConnectionSelectionType.FixedQuantity, 0.0, 1, 0.05, 0.0));
list.Add(new ConnectionMutationInfo(0.5, ConnectionPerturbanceType.Reset,
ConnectionSelectionType.Proportional, 0.1, 0, 0.0, 0.0));
list.Add(new ConnectionMutationInfo(0.125, ConnectionPerturbanceType.Reset,
ConnectionSelectionType.FixedQuantity, 0.0, 1, 0.0, 0.0));
list.Initialize();
return list;
}
/// <summary>
/// Copy constructor.
/// </summary>
public NeatGenomeParameters(NeatGenomeParameters copyFrom)
{
_feedforwardOnly = copyFrom._feedforwardOnly;
_activationFn = copyFrom._activationFn;
_connectionWeightRange = copyFrom._connectionWeightRange;
_initialInterconnectionsProportion = copyFrom._initialInterconnectionsProportion;
_disjointExcessGenesRecombineProbability = copyFrom._disjointExcessGenesRecombineProbability;
_connectionWeightMutationProbability = copyFrom._connectionWeightMutationProbability;
_addNodeMutationProbability = copyFrom._addNodeMutationProbability;
_addConnectionMutationProbability = copyFrom._addConnectionMutationProbability;
_nodeAuxStateMutationProbability = copyFrom._nodeAuxStateMutationProbability;
_deleteConnectionMutationProbability = copyFrom._deleteConnectionMutationProbability;
_rouletteWheelLayout = new RouletteWheelLayout(copyFrom._rouletteWheelLayout);
_rouletteWheelLayoutNonDestructive = new RouletteWheelLayout(copyFrom._rouletteWheelLayoutNonDestructive);
_connectionMutationInfoList = new ConnectionMutationInfoList(copyFrom._connectionMutationInfoList);
_connectionMutationInfoList.Initialize();
_fitnessHistoryLength = copyFrom._fitnessHistoryLength;
}
/// <summary>
/// Returns the default connection weight mutation scheme.
/// </summary>
private ConnectionMutationInfoList CreateConnectionWeightMutationScheme_Default()
{
ConnectionMutationInfoList list = new ConnectionMutationInfoList(12);
// Gaussian jiggle with sigma=0.02 (most values between +-0.04)
// Jiggle 1,2 and 3 connections respectively.
list.Add(new ConnectionMutationInfo(0.11375, ConnectionPerturbanceType.JiggleGaussian,
ConnectionSelectionType.FixedQuantity, 0.0, 1, 0.0, 0.02));
list.Add(new ConnectionMutationInfo(0.11375, ConnectionPerturbanceType.JiggleGaussian,
ConnectionSelectionType.FixedQuantity, 0.0, 2, 0.0, 0.02));
list.Add(new ConnectionMutationInfo(0.11375, ConnectionPerturbanceType.JiggleGaussian,
ConnectionSelectionType.FixedQuantity, 0.0, 3, 0.0, 0.02));
// Jiggle 2% of connections.
list.Add(new ConnectionMutationInfo(0.11375, ConnectionPerturbanceType.JiggleGaussian,
ConnectionSelectionType.Proportional, 0.02, 0, 0.0, 0.02));
// Gaussian jiggle with sigma=1 (most values between +-2)
// Jiggle 1,2 and 3 connections respectively.
list.Add(new ConnectionMutationInfo(0.11375, ConnectionPerturbanceType.JiggleGaussian,
ConnectionSelectionType.FixedQuantity, 0.0, 1, 0.0, 1));
list.Add(new ConnectionMutationInfo(0.11375, ConnectionPerturbanceType.JiggleGaussian,
ConnectionSelectionType.FixedQuantity, 0.0, 2, 0.0, 1));
list.Add(new ConnectionMutationInfo(0.11375, ConnectionPerturbanceType.JiggleGaussian,
ConnectionSelectionType.FixedQuantity, 0.0, 3, 0.0, 1));
// Jiggle 2% of connections.
list.Add(new ConnectionMutationInfo(0.11275, ConnectionPerturbanceType.JiggleGaussian,
ConnectionSelectionType.Proportional, 0.02, 0, 0.0, 1));
// Reset mutations. 1, 2 and 3 connections respectively.
list.Add(new ConnectionMutationInfo(0.03, ConnectionPerturbanceType.Reset,
ConnectionSelectionType.FixedQuantity, 0.0, 1, 0.0, 0));
list.Add(new ConnectionMutationInfo(0.03, ConnectionPerturbanceType.Reset,
ConnectionSelectionType.FixedQuantity, 0.0, 2, 0.0, 0));
list.Add(new ConnectionMutationInfo(0.03, ConnectionPerturbanceType.Reset,
ConnectionSelectionType.FixedQuantity, 0.0, 3, 0.0, 0));
// Reset 2% of connections.
list.Add(new ConnectionMutationInfo(0.001, ConnectionPerturbanceType.Reset,
ConnectionSelectionType.Proportional, 0.02, 0, 0.0, 0));
list.Initialize();
return list;
}
/// <summary>
/// Returns the default connection weight mutation scheme.
/// </summary>
private ConnectionMutationInfoList CreateConnectionWeightMutationScheme_Default()
{
ConnectionMutationInfoList list = new ConnectionMutationInfoList(6);
// Gaussian jiggle with sigma=0.01 (most values between +-0.02)
// Jiggle 1,2 and 3 connections respectively.
list.Add(new ConnectionMutationInfo(0.5985, ConnectionPerturbanceType.JiggleGaussian,
ConnectionSelectionType.FixedQuantity, 0.0, 1, 0.0, 0.01));
list.Add(new ConnectionMutationInfo(0.2985, ConnectionPerturbanceType.JiggleGaussian,
ConnectionSelectionType.FixedQuantity, 0.0, 2, 0.0, 0.01));
list.Add(new ConnectionMutationInfo(0.0985, ConnectionPerturbanceType.JiggleGaussian,
ConnectionSelectionType.FixedQuantity, 0.0, 3, 0.0, 0.01));
// Reset mutations. 1, 2 and 3 connections respectively.
list.Add(new ConnectionMutationInfo(0.015, ConnectionPerturbanceType.Reset,
ConnectionSelectionType.FixedQuantity, 0.0, 1, 0.0, 0));
list.Add(new ConnectionMutationInfo(0.015, ConnectionPerturbanceType.Reset,
ConnectionSelectionType.FixedQuantity, 0.0, 2, 0.0, 0));
list.Add(new ConnectionMutationInfo(0.015, ConnectionPerturbanceType.Reset,
ConnectionSelectionType.FixedQuantity, 0.0, 3, 0.0, 0));
list.Initialize();
return list;
}
