public void IsCompatibleReturnsFalseForDifferentLearningRate()
{
var defaultConfig = this._builder.BuildWithFallback(null);
var otherConfig = new DifferentialEvolutionConfiguration.DifferentialEvolutionConfigurationBuilder()
.SetLearningRate(defaultConfig.LearningRate + 0.01)
.BuildWithFallback(defaultConfig);
ConfigurationBaseTest.CheckIncompatibility(defaultConfig, otherConfig);
}
public void IsCompatibleReturnsTrueForChangesInInitialParameters()
{
var defaultConfig = this._builder.BuildWithFallback(null);
var otherConfig = new DifferentialEvolutionConfiguration.DifferentialEvolutionConfigurationBuilder()
.SetInitialMeanMutationFactor(defaultConfig.InitialMeanMutationFactor + 0.01)
.SetInitialMeanCrossoverRate(defaultConfig.InitialMeanCrossoverRate + 0.02)
.BuildWithFallback(defaultConfig);
// Check those two configuration are compatible.
Assert.True(
defaultConfig.IsCompatible(otherConfig),
"Configurations should be compatible.");
Assert.Equal(
defaultConfig.IsCompatible(otherConfig),
otherConfig.IsCompatible(defaultConfig));
}
public void IsTechnicallyCompatibleReturnsTrueForDifferentParameters()
{
var defaultConfig = this._builder.BuildWithFallback(null);
var otherConfig = new DifferentialEvolutionConfiguration.DifferentialEvolutionConfigurationBuilder()
.SetBestPercentage(defaultConfig.BestPercentage + 0.01)
.SetInitialMeanMutationFactor(defaultConfig.InitialMeanMutationFactor + 0.02)
.SetInitialMeanCrossoverRate(defaultConfig.InitialMeanCrossoverRate + 0.03)
.SetLearningRate(defaultConfig.LearningRate + 0.04)
.BuildWithFallback(defaultConfig);
// Check those two configuration are compatible.
Assert.True(
defaultConfig.IsTechnicallyCompatible(otherConfig),
"Configurations should be technically compatible.");
Assert.Equal(
defaultConfig.IsTechnicallyCompatible(otherConfig),
otherConfig.IsTechnicallyCompatible(defaultConfig));
}
public void BuildWithFallbackUsesFallbacksForDetailedConfiguration()
{
var differentialEvolutionFallback =
new DifferentialEvolutionConfiguration.DifferentialEvolutionConfigurationBuilder()
.SetInitialMeanMutationFactor(0.87);
var fallback =
new DifferentialEvolutionStrategyConfiguration.DifferentialEvolutionStrategyConfigurationBuilder()
.SetDifferentialEvolutionConfigurationBuilder(differentialEvolutionFallback)
.BuildWithFallback(null);
var differentialEvolution = this._defaultDifferentialEvolutionConfigurationBuilder.SetBestPercentage(0.12);
var config = this._builder
.SetDifferentialEvolutionConfigurationBuilder(differentialEvolution)
.BuildWithFallback(fallback);
Assert.Equal(
0.87,
config.DifferentialEvolutionConfiguration.InitialMeanMutationFactor);
Assert.Equal(
0.12,
config.DifferentialEvolutionConfiguration.BestPercentage);
}
public override void BuildWithFallbackUsesFallbacks()
{
// Set all values in builder and build a configuration.
var fallback = this._builder
.SetBestPercentage(0.11)
.SetInitialMeanMutationFactor(0.69)
.SetInitialMeanCrossoverRate(0.37)
.SetLearningRate(0.81)
.BuildWithFallback(null);
// Create a new builder based on it and let it build a configuration.
var config = new DifferentialEvolutionConfiguration.DifferentialEvolutionConfigurationBuilder()
.BuildWithFallback(fallback);
// Check all values.
Assert.Equal(fallback.BestPercentage, config.BestPercentage);
Assert.Equal(
fallback.InitialMeanMutationFactor,
config.InitialMeanMutationFactor);
Assert.Equal(
fallback.InitialMeanCrossoverRate,
config.InitialMeanCrossoverRate);
Assert.Equal(fallback.LearningRate, config.LearningRate);
}
/// <summary>
/// Sets relevant parameters for the differential evolution algorithm.
/// </summary>
/// <param name="builder">
/// A <see cref="DifferentialEvolutionConfiguration.DifferentialEvolutionConfigurationBuilder"/>.
/// </param>
/// <returns>The <see cref="DifferentialEvolutionStrategyConfigurationBuilder" /> in its new state.</returns>
public DifferentialEvolutionStrategyConfigurationBuilder SetDifferentialEvolutionConfigurationBuilder(
DifferentialEvolutionConfiguration.DifferentialEvolutionConfigurationBuilder builder)
{
this._differentialEvolutionConfigurationBuilder = builder ?? throw new ArgumentNullException(nameof(builder));
return(this);
}
/// <summary>
/// Initializes a new instance of the <see cref="DifferentialEvolutionConfigurationTest"/> class.
/// </summary>
public DifferentialEvolutionConfigurationTest()
{
this._builder =
new DifferentialEvolutionConfiguration.DifferentialEvolutionConfigurationBuilder();
}
