/// <summary>
/// Save the object.
/// </summary>
/// <param name="os">The output stream.</param>
/// <param name="obj">The object to save.</param>
public virtual void Save(Stream os, Object obj)
{
var xout = new EncogWriteHelper(os);
var neat = (NEATNetwork)obj;
xout.AddSection("NEAT");
xout.AddSubSection("PARAMS");
xout.AddProperties(neat.Properties);
xout.AddSubSection("NETWORK");
xout.WriteProperty(PersistConst.InputCount, neat.InputCount);
xout.WriteProperty(PersistConst.OutputCount, neat.OutputCount);
xout.WriteProperty(PersistConst.ActivationFunction,
neat.ActivationFunction);
xout.WriteProperty(NEATPopulation.PropertyOutputActivation,
neat.OutputActivationFunction);
xout.WriteProperty(PersistConst.Depth, neat.NetworkDepth);
xout.WriteProperty(PersistConst.Snapshot, neat.Snapshot);
xout.AddSubSection("NEURONS");
foreach (NEATNeuron neatNeuron in neat.Neurons)
{
xout.AddColumn((int)neatNeuron.NeuronID);
xout.AddColumn(PersistNEATPopulation.NeuronTypeToString(neatNeuron.NeuronType));
xout.AddColumn(neatNeuron.ActivationResponse);
xout.AddColumn(neatNeuron.SplitX);
xout.AddColumn(neatNeuron.SplitY);
xout.WriteLine();
}
xout.AddSubSection("LINKS");
foreach (NEATNeuron neatNeuron in neat.Neurons)
{
foreach (NEATLink link in neatNeuron.OutputboundLinks)
{
WriteLink(xout, link);
}
}
xout.Flush();
}
/// <inheritdoc/>
public Object Read(Stream istream)
{
long nextInnovationId = 0;
long nextGeneId = 0;
var result = new NEATPopulation();
var innovationList = new NEATInnovationList {
Population = result
};
result.Innovations = innovationList;
var reader = new EncogReadHelper(istream);
EncogFileSection section;
while ((section = reader.ReadNextSection()) != null)
{
if (section.SectionName.Equals("NEAT-POPULATION") &&
section.SubSectionName.Equals("INNOVATIONS"))
{
foreach (String line in section.Lines)
{
IList <String> cols = EncogFileSection
.SplitColumns(line);
var innovation = new NEATInnovation();
var innovationId = int.Parse(cols[1]);
innovation.InnovationId = innovationId;
innovation.NeuronId = int.Parse(cols[2]);
result.Innovations.Innovations[cols[0]] = innovation;
nextInnovationId = Math.Max(nextInnovationId, innovationId + 1);
}
}
else if (section.SectionName.Equals("NEAT-POPULATION") &&
section.SubSectionName.Equals("SPECIES"))
{
NEATGenome lastGenome = null;
BasicSpecies lastSpecies = null;
foreach (String line in section.Lines)
{
IList <String> cols = EncogFileSection.SplitColumns(line);
if (String.Compare(cols[0], "s", StringComparison.OrdinalIgnoreCase) == 0)
{
lastSpecies = new BasicSpecies
{
Population = result,
Age = int.Parse(cols[1]),
BestScore = CSVFormat.EgFormat.Parse(cols[2]),
GensNoImprovement = int.Parse(cols[3])
};
result.Species.Add(lastSpecies);
}
else if (String.Compare(cols[0], "g", StringComparison.OrdinalIgnoreCase) == 0)
{
bool isLeader = lastGenome == null;
lastGenome = new NEATGenome
{
InputCount = result.InputCount,
OutputCount = result.OutputCount,
Species = lastSpecies,
AdjustedScore = CSVFormat.EgFormat.Parse(cols[1]),
Score = CSVFormat.EgFormat.Parse(cols[2]),
BirthGeneration = int.Parse(cols[3])
};
lastSpecies.Add(lastGenome);
if (isLeader)
{
lastSpecies.Leader = lastGenome;
}
}
else if (String.Compare(cols[0], "n", StringComparison.OrdinalIgnoreCase) == 0)
{
var neuronGene = new NEATNeuronGene();
int geneId = int.Parse(cols[1]);
neuronGene.Id = geneId;
IActivationFunction af = EncogFileSection.ParseActivationFunction(cols[2]);
neuronGene.ActivationFunction = af;
neuronGene.NeuronType = PersistNEATPopulation.StringToNeuronType(cols[3]);
neuronGene.InnovationId = int.Parse(cols[4]);
lastGenome.NeuronsChromosome.Add(neuronGene);
nextGeneId = Math.Max(geneId + 1, nextGeneId);
}
else if (String.Compare(cols[0], "l", StringComparison.OrdinalIgnoreCase) == 0)
{
var linkGene = new NEATLinkGene
{
Id = int.Parse(cols[1]),
Enabled = (int.Parse(cols[2]) > 0),
FromNeuronId = int.Parse(cols[3]),
ToNeuronId = int.Parse(cols[4]),
Weight = CSVFormat.EgFormat.Parse(cols[5]),
InnovationId = int.Parse(cols[6])
};
lastGenome.LinksChromosome.Add(linkGene);
}
}
}
else if (section.SectionName.Equals("NEAT-POPULATION") &&
section.SubSectionName.Equals("CONFIG"))
{
IDictionary <string, string> prm = section.ParseParams();
string afStr = prm[NEATPopulation.PropertyNEATActivation];
if (String.Compare(afStr, TypeCppn, StringComparison.OrdinalIgnoreCase) == 0)
{
HyperNEATGenome.BuildCPPNActivationFunctions(result.ActivationFunctions);
}
else
{
result.NEATActivationFunction = EncogFileSection.ParseActivationFunction(prm,
NEATPopulation.PropertyNEATActivation);
}
result.ActivationCycles = EncogFileSection.ParseInt(prm,
PersistConst.ActivationCycles);
result.InputCount = EncogFileSection.ParseInt(prm,
PersistConst.InputCount);
result.OutputCount = EncogFileSection.ParseInt(prm,
PersistConst.OutputCount);
result.PopulationSize = EncogFileSection.ParseInt(prm,
NEATPopulation.PropertyPopulationSize);
result.SurvivalRate = EncogFileSection.ParseDouble(prm,
NEATPopulation.PropertySurvivalRate);
result.ActivationCycles = EncogFileSection.ParseInt(prm,
NEATPopulation.PropertyCycles);
}
}
// set factories
if (result.IsHyperNEAT)
{
result.GenomeFactory = new FactorHyperNEATGenome();
result.CODEC = new HyperNEATCODEC();
}
else
{
result.GenomeFactory = new FactorNEATGenome();
result.CODEC = new NEATCODEC();
}
// set the next ID's
result.InnovationIDGenerate.CurrentID = nextInnovationId;
result.GeneIdGenerate.CurrentID = nextGeneId;
// find first genome, which should be the best genome
if (result.Species.Count > 0)
{
ISpecies species = result.Species[0];
if (species.Members.Count > 0)
{
result.BestGenome = species.Members[0];
}
}
return(result);
}
/// <summary>
/// Read the object.
/// </summary>
/// <param name="mask0">The stream to read from.</param>
/// <returns>The loaded object.</returns>
public virtual Object Read(Stream mask0)
{
var result = new NEATNetwork();
var ins0 = new EncogReadHelper(mask0);
EncogFileSection section;
IDictionary <Int32, NEATNeuron> neuronMap = new Dictionary <Int32, NEATNeuron>();
while ((section = ins0.ReadNextSection()) != null)
{
if (section.SectionName.Equals("NEAT") &&
section.SubSectionName.Equals("PARAMS"))
{
IDictionary <String, String> paras = section.ParseParams();
foreach (String key in paras.Keys)
{
result.Properties.Add(key, paras[key]);
}
}
if (section.SectionName.Equals("NEAT") &&
section.SubSectionName.Equals("NETWORK"))
{
IDictionary <String, String> p = section.ParseParams();
result.InputCount = EncogFileSection.ParseInt(p,
PersistConst.InputCount);
result.OutputCount = EncogFileSection.ParseInt(p,
PersistConst.OutputCount);
result.ActivationFunction = EncogFileSection
.ParseActivationFunction(p,
PersistConst.ActivationFunction);
result.OutputActivationFunction = EncogFileSection
.ParseActivationFunction(p,
NEATPopulation.PropertyOutputActivation);
result.NetworkDepth = EncogFileSection.ParseInt(p,
PersistConst.Depth);
result.Snapshot = EncogFileSection.ParseBoolean(p,
PersistConst.Snapshot);
}
else if (section.SectionName.Equals("NEAT") &&
section.SubSectionName.Equals("NEURONS"))
{
foreach (String line in section.Lines)
{
IList <String> cols = EncogFileSection.SplitColumns(line);
long neuronID = Int32.Parse(cols[0]);
NEATNeuronType neuronType = PersistNEATPopulation
.StringToNeuronType(cols[1]);
double activationResponse = CSVFormat.EgFormat
.Parse(cols[2]);
double splitY = CSVFormat.EgFormat
.Parse(cols[3]);
double splitX = CSVFormat.EgFormat
.Parse(cols[4]);
var neatNeuron = new NEATNeuron(neuronType,
neuronID, splitY, splitX, activationResponse);
result.Neurons.Add(neatNeuron);
neuronMap[((int)neuronID)] = (neatNeuron);
}
}
else if (section.SectionName.Equals("NEAT") &&
section.SubSectionName.Equals("LINKS"))
{
foreach (String line in section.Lines)
{
IList <String> cols = EncogFileSection.SplitColumns(line);
int fromID = Int32.Parse(cols[0]);
int toID = Int32.Parse(cols[1]);
bool recurrent = Int32.Parse(cols[2]) > 0;
double weight = CSVFormat.EgFormat.Parse(cols[3]);
NEATNeuron fromNeuron = (neuronMap[fromID]);
NEATNeuron toNeuron = (neuronMap[toID]);
var neatLink = new NEATLink(weight, fromNeuron,
toNeuron, recurrent);
fromNeuron.OutputboundLinks.Add(neatLink);
toNeuron.InboundLinks.Add(neatLink);
}
}
}
return(result);
}
