public void SaveAndLoadGenome()
{
var metaNeatGenome = new MetaNeatGenome <double>(3, 2, true, new ReLU());
var genomeBuilder = NeatGenomeBuilderFactory <double> .Create(metaNeatGenome);
// Simple acyclic graph.
var connGenes = new ConnectionGenes <double>(6);
connGenes[0] = (0, 3, 0.123);
connGenes[1] = (1, 3, 1.234);
connGenes[2] = (2, 3, -0.5835);
connGenes[3] = (2, 4, 5.123456789);
connGenes[4] = (2, 5, 2.5);
connGenes[5] = (5, 4, 5.4);
// Wrap in a genome.
NeatGenome <double> genome = genomeBuilder.Create(0, 0, connGenes);
// Create a memory stream to save the genome into.
using (MemoryStream ms = new(1024))
{
// Save the genome.
NeatGenomeSaver <double> .Save(genome, ms);
// Load the genome.
ms.Position = 0;
NeatGenomeLoader <double> loader = NeatGenomeLoaderFactory.CreateLoaderDouble(metaNeatGenome);
NeatGenome <double> genomeLoaded = loader.Load(ms);
// Compare the original genome with the loaded genome.
IOTestUtils.CompareGenomes(genome, genomeLoaded);
}
}
/// <summary>
/// Create a new instance of <see cref="NeatPopulationLoader{Double}"/>.
/// </summary>
/// <param name="metaNeatGenome">Meta neat genome.</param>
/// <returns>A new instance of <see cref="NeatPopulationLoader{Double}"/>.</returns>
public static NeatPopulationLoader <double> CreateLoaderDouble(
MetaNeatGenome <double> metaNeatGenome)
{
NeatGenomeLoader <double> genomeLoader = NeatGenomeLoaderFactory.CreateLoaderDouble(metaNeatGenome);
return(new NeatPopulationLoader <double>(genomeLoader));
}
public void SaveGenome_FrenchLocale()
{
// Store the current/default culture info.
Thread currentThread = Thread.CurrentThread;
CultureInfo defaultCulture = currentThread.CurrentCulture;
// Change the default culture to French (which uses e.g. a comma as a decimal separator).
CultureInfo frenchCulture = new("fr-FR");
Thread.CurrentThread.CurrentCulture = frenchCulture;
try
{
// Manually build a genome.
var metaNeatGenome = new MetaNeatGenome <double>(3, 2, true, new ReLU());
NeatGenome <double> genomeBuilt = CreateGenome1(metaNeatGenome);
// Save the genome into a MemoryStream.
using MemoryStream ms = new();
NeatGenomeSaver <double> .Save(genomeBuilt, ms);
// Load the saved genome.
ms.Position = 0;
NeatGenomeLoader <double> loader = NeatGenomeLoaderFactory.CreateLoaderDouble(metaNeatGenome);
NeatGenome <double> genomeLoaded = loader.Load(ms);
// Compare the original genome with the loaded one.
IOTestUtils.CompareGenomes(genomeLoaded, genomeBuilt);
}
finally
{
// Restore the current thread's default culture; otherwise we may break other unit tests that use this thread.
Thread.CurrentThread.CurrentCulture = defaultCulture;
}
}
public void LoadGenome()
{
var metaNeatGenome = new MetaNeatGenome <double>(3, 2, true, new ReLU());
// Load test genome.
NeatGenomeLoader <double> loader = NeatGenomeLoaderFactory.CreateLoaderDouble(metaNeatGenome);
NeatGenome <double> genomeLoaded = loader.Load("TestData/example1.genome");
// Manually build an equivalent genome.
NeatGenome <double> genomeBuilt = CreateGenome1(metaNeatGenome);
// Compare the two genomes.
IOTestUtils.CompareGenomes(genomeLoaded, genomeBuilt);
}
public void SaveGenome()
{
// Manually build a genome.
var metaNeatGenome = new MetaNeatGenome <double>(3, 2, true, new ReLU());
NeatGenome <double> genomeBuilt = CreateGenome1(metaNeatGenome);
// Save the genome into a MemoryStream.
using MemoryStream ms = new();
NeatGenomeSaver <double> .Save(genomeBuilt, ms);
// Load the saved genome.
ms.Position = 0;
NeatGenomeLoader <double> loader = NeatGenomeLoaderFactory.CreateLoaderDouble(metaNeatGenome);
NeatGenome <double> genomeLoaded = loader.Load(ms);
// Compare the two genomes.
IOTestUtils.CompareGenomes(genomeLoaded, genomeBuilt);
}
static NeuralNetAcyclicBenchmarks()
{
// TODO: Load neural nets directly, instead of loading a genome and decoding.
var metaNeatGenome = new MetaNeatGenome <double>(12, 1, true, new ActivationFunctions.LeakyReLU());
var genomeLoader = NeatGenomeLoaderFactory.CreateLoaderDouble(metaNeatGenome);
var genome = genomeLoader.Load("data/genomes/binary11.genome");
var genomeDecoder = new NeatGenomeDecoderAcyclic();
__nn = (NeuralNetAcyclic)genomeDecoder.Decode(genome);
// Set some non-zero random input values.
var rng = RandomDefaults.CreateRandomSource();
for (int i = 0; i < __nn.InputVector.Length; i++)
{
__nn.InputVector[i] = rng.NextDouble();
}
}
static NeuralNetCyclicBenchmarks()
{
// TODO: Load neural nets directly, instead of loading a genome and decoding.
var metaNeatGenome = new MetaNeatGenome <double>(14, 4, false, new LeakyReLU());
var genomeLoader = NeatGenomeLoaderFactory.CreateLoaderDouble(metaNeatGenome);
var genome = genomeLoader.Load("data/genomes/preycapture.genome");
var genomeDecoder = new NeatGenomeDecoderCyclic(1);
__nn = (NeuralNetCyclic)genomeDecoder.Decode(genome);
// Set some non-zero random input values.
var rng = RandomDefaults.CreateRandomSource();
var inputs = __nn.Inputs.Span;
for (int i = 0; i < inputs.Length; i++)
{
inputs[i] = rng.NextDouble();
}
}
private static void VerifyNeuralNetResponseInner(bool enableHardwareAcceleration)
{
var activationFnFactory = new DefaultActivationFunctionFactory <double>(enableHardwareAcceleration);
var metaNeatGenome = new MetaNeatGenome <double>(4, 1, true, activationFnFactory.GetActivationFunction("LeakyReLU"));
// Load test genome.
NeatGenomeLoader <double> loader = NeatGenomeLoaderFactory.CreateLoaderDouble(metaNeatGenome);
NeatGenome <double> genome = loader.Load("TestData/binary-three-multiplexer.genome");
// Decode genome to a neural net.
var genomeDecoder = NeatGenomeDecoderFactory.CreateGenomeDecoderAcyclic();
IBlackBox <double> blackBox = genomeDecoder.Decode(genome);
// Evaluate the neural net.
var evaluator = new BinaryThreeMultiplexerEvaluator();
// Confirm the expected fitness (to a limited amount of precision to allow for small variations of floating point
// results that can occur as a result of platform/environmental variations).
FitnessInfo fitnessInfo = evaluator.Evaluate(blackBox);
Assert.Equal(107.50554956432657, fitnessInfo.PrimaryFitness, 6);
}