/// <summary>
/// Build the representation of a gene for easy identification
/// </summary>
/// <param name="firstAllele"></param>
/// <param name="secondAllele"></param>
public void BuildRepresentation(IAllele firstAllele, IAllele secondAllele)
{
if (firstAllele.Representation == secondAllele.Representation)
{
_representation = firstAllele.Representation;
return;
}
if(firstAllele.IsDominant && secondAllele.IsDominant)
{
_representation = GeneRepresentationBuilder.CreateName(firstAllele.Representation, secondAllele.Representation);
return;
}
if (firstAllele.IsDominant)
{
_representation = firstAllele.Representation;
return;
}
if (secondAllele.IsDominant)
{
_representation = secondAllele.Representation;
return;
}
_representation = GeneRepresentationBuilder.CreateName(firstAllele.Representation,
secondAllele.Representation);
}
public AlleleControl(IAllele allele, StackPanel sp, Func<object, int> query, bool coDominant = false)
{
_allele = allele;
_stackPanel = sp;
_query = query;
_isCoDominant = coDominant;
}
public void ContainsGeneValueReturnsTrueForMaximum()
{
IAllele maximumValue = this.WrapInAlleleWithCorrectType(NumericalDomainTest.maximum);
Assert.True(
this._domain.ContainsGeneValue(maximumValue),
$"{maximumValue} supposedly not contained in {this._domain}.");
}
public void ContainsGeneValueReturnsFalseForLowerValue()
{
IAllele lowValue = this.WrapInAlleleWithCorrectType(NumericalDomainTest.minimum - 1);
Assert.False(
this._domain.ContainsGeneValue(lowValue),
$"{lowValue} supposedly contained in {this._domain}.");
}
public void ContainsGeneValueReturnsFalseForHigherValue()
{
IAllele highValue = this.WrapInAlleleWithCorrectType(NumericalDomainTest.maximum + 1);
Assert.False(
this._domain.ContainsGeneValue(highValue),
$"{highValue} supposedly contained in {this._domain}.");
}
public void GeneIsSetCorrectly()
{
this._genome.SetGene("a", new Allele <int>(5));
IAllele geneValue = this._genome.GetGeneValue("a");
Assert.Equal(5, geneValue.GetValue());
}
public Gene(IAllele firstAllele, IAllele secondAllele, Guid locusId)
{
_fitnessGain = 1;
_locusId = locusId;
this._firstAlleleId = firstAllele.Id;
this._secondAlleleId = secondAllele.Id;
_alleles = new List<Guid> {firstAllele.Id, secondAllele.Id};
BuildRepresentation(firstAllele, secondAllele);
}
/// <summary>
/// Converts the given <paramref name="member"/> of this <see cref="IDomain"/> into a double value.
/// </summary>
/// <param name="member">A member of the current domain.</param>
/// <returns>A double that represents the <paramref name="member"/>.</returns>
public virtual double ConvertToDouble(IAllele member)
{
// check if this is a member
if (this.ContainsGeneValue(member))
{
return(this.ConvertMemberToDouble((T)member.GetValue()));
}
throw new ArgumentException($"Allele {member} is not a member of this Domain.", nameof(member));
}
/// <summary>
/// Generates a gene value from the domain that results from mutating the given gene value.
/// </summary>
/// <param name="allele">The value to base the mutated value on. Has to be part of the domain.</param>
/// <param name="variancePercentage">
/// Mutation might utilize Gaussian distributions.
/// This parameter defines the respective variance as a certain percentage of the variable's domain.
/// Needs to be positive and at most 1.
/// </param>
/// <returns>The generated gene value.</returns>
/// <exception cref="ArgumentOutOfRangeException">
/// Thrown if the given value is not part of the domain
/// or the given percentage is not a positive value at most 1.
/// </exception>
public IAllele MutateGeneValue(IAllele allele, double variancePercentage)
{
if (!this.ContainsGeneValue(allele))
{
throw new ArgumentOutOfRangeException(
$"{allele.GetValue().GetType()} {allele} is not part of the {typeof(T)} domain {this}.");
}
var typedValue = (T)allele.GetValue();
return(new Allele <T>(this.Mutate(typedValue, variancePercentage)));
}
public void RandomGenerationStaysInDomain()
{
// For a lot of tries:
for (int i = 0; i < CategoricalDomainTest.triesForRandomTests; i++)
{
// Check that the generated value is in the domain.
IAllele generated = this._categoricalDomain.GenerateRandomGeneValue();
Assert.True(
this._categoricalDomain.ContainsGeneValue(generated),
$"Generated value {generated} which is not contained in {this._categoricalDomain}");
}
}
/// <summary>
/// Checks if the given gene value is part of the domain.
/// </summary>
/// <param name="allele">Gene value to check.</param>
/// <returns>Whether or not the given gene value is part of the domain.</returns>
public bool ContainsGeneValue(IAllele allele)
{
// Check given value's type.
if (!(allele.GetValue() is T))
{
return(false);
}
// Check if it is contained in domain.
var typedValue = (T)allele.GetValue();
return(this.Contains(typedValue));
}
public void RandomGenerationCreatesLegalGenes()
{
this._integerDomain = new IntegerDomain(IntegerDomainTest.minimum, IntegerDomainTest.maximum);
// For a lot of tries:
for (int i = 0; i < IntegerDomainTest.triesForRandomTests; i++)
{
// Check that the generated gene is legal.
IAllele generated = this._integerDomain.GenerateRandomGeneValue();
Assert.True(
this._integerDomain.ContainsGeneValue(generated),
$"Generated value {generated} is not a legal gene of {this._integerDomain}.");
}
}
public StackPanel CreateDataPairLinq(string controlName, string labelContent, Func<IAllele, int> bindingSource, IValueConverter converter, IAllele allele)
{
var stackPanel = CreateDataPairBase(controlName, labelContent);
var binding = new Binding
{
Source = bindingSource,
Mode = BindingMode.OneWay,
Converter = converter,
ConverterParameter = allele
};
var tb = stackPanel.Children[1] as TextBox;
tb?.SetBinding(TextBox.TextProperty, binding);
return stackPanel;
}
public void RandomGenerationStaysInDomain()
{
IDomain domain = new ContinuousDomain(ContinuousDomainTest.minimum, ContinuousDomainTest.maximum);
// For a lot of tries:
for (int i = 0; i < ContinuousDomainTest.TriesForRandomTests; i++)
{
// Check that the generated value is in the domain.
IAllele generated = domain.GenerateRandomGeneValue();
Assert.True(
domain.ContainsGeneValue(generated),
$"Generated value {generated} which is not contained in {domain}");
}
}
public void MutationStaysInDomain()
{
// Initialize bounded domain.
var domain = new ContinuousDomain(ContinuousDomainTest.minimum, ContinuousDomainTest.maximum);
// Fix the value to mutate and the variance percentage.
Allele <double> valueToMutate = new Allele <double>(ContinuousDomainTest.maximum - 1);
double variancePercentage = 1.0;
// For a lot of tries:
for (int i = 0; i < ContinuousDomainTest.TriesForRandomTests; i++)
{
// Mutate and check that the mutated value is in the domain.
IAllele mutatedGeneValue = domain.MutateGeneValue(valueToMutate, variancePercentage);
Assert.True(
domain.ContainsGeneValue(mutatedGeneValue),
$"Value {mutatedGeneValue} was generated by mutation and is not contained in {domain}");
}
}
public void MutateRespectsMutationRate()
{
// Create genome builder with a mutation rate of 0.35.
double mutationRate = 0.35;
var configuration =
new AlgorithmTunerConfiguration.AlgorithmTunerConfigurationBuilder()
.SetMutationRate(mutationRate)
.Build(maximumNumberParallelEvaluations: 1);
var genomeBuilder = new GenomeBuilder(GenomeBuilderTest.BuildParameterTree(), configuration);
// Create genome.
var genome = GenomeBuilderTest.BuildFittingGenome();
// For a lot of iterations:
IAllele oldGeneValue = genome.GetGeneValue(GenomeBuilderTest.ContinuousParameter);
int changeCount = 0;
int numberLoops = 1000;
for (int i = 0; i < numberLoops; i++)
{
// Mutate the genome ...
genomeBuilder.Mutate(genome);
// ... compare the continuous parameter gene...
IAllele newGeneValue = genome.GetGeneValue(GenomeBuilderTest.ContinuousParameter);
if (!object.Equals(newGeneValue, oldGeneValue))
{
changeCount++;
}
// ... and count the number of times it changes.
oldGeneValue = newGeneValue;
}
// Finally compare the number of mutations with the expected number.
double expectedNumberMutations = mutationRate * numberLoops;
Assert.True(
Math.Abs(expectedNumberMutations - changeCount) <= 0.1 * expectedNumberMutations,
"Number of mutations was not as expected.");
}
public override void MutateGeneValueThrowsExceptionForInvalidValue()
{
IAllele geneValue = this.WrapInAlleleWithCorrectType(NumericalDomainTest.maximum + 1);
Assert.Throws <ArgumentOutOfRangeException>(() => this._domain.MutateGeneValue(geneValue, NumericalDomainTest.irrelevantVariance));
}
public bool Equals(IAllele other)
{
return this.DNA.Equals(other.DNA);
}
/// <summary>
/// Sets the value for the <see cref="ControlledParameterIdentifier"/>,
/// that should be used when the <see cref="IndicatorParameterIdentifier"/> parameter
/// is set to <see cref="IndicatorParameterValue"/> in the current genome.
/// </summary>
/// <param name="value">
/// The value for the <see cref="IAllele"/>.
/// </param>
/// <typeparam name="T">
/// The value type of the <see cref="Allele{T}"/>.
/// </typeparam>
internal void SetNativeOverrideValue <T>(T value)
{
this.NativeOverrideValue = new Allele <T>(value);
}
public override double ConvertToDouble(IAllele member)
{
throw new NotSupportedException("Please use the ICategoricalEncoding to convert a categorical value to double!");
}
/// <summary>
/// Check if override of <see cref="ParameterReplacementDefinition.IndicatorParameterIdentifier"/> is required.
/// </summary>
/// <param name="indicatorInCurrentTree">
/// The indicator's value in the current tree.
/// </param>
/// <param name="replacementDefinitionWithOverride">
/// The wrapper with override.
/// </param>
/// <returns>
/// True, if <paramref name="indicatorInCurrentTree"/>.GetValue().Equals(<see cref="ParameterReplacementDefinition.IndicatorParameterValue"/>).
/// </returns>
private static bool CheckIfOverrideIsRequired(
IAllele indicatorInCurrentTree,
ParameterReplacementDefinition replacementDefinitionWithOverride)
{
return(object.Equals(indicatorInCurrentTree.GetValue(), replacementDefinitionWithOverride.IndicatorParameterValue));
}
public void AddAllele(IAllele allele)
{
_alleleManager.CreateAllele(allele);
}
/// <summary> /// Gets the percentage that IAllele one and IAllele two are similar. /// 100% would be identical and 0% would indicate that the IAlleles share nothing. /// </summary> /// <param name="one">The first IAllele to compare.</param> /// <param name="two">The second IAllele to compare.</param> /// <returns>The percentage that IAllele one and IAllele two are similar. /// 100% would be identical and 0% would indicate that the IAlleles share nothing.</returns> public abstract double GetPercentageIAlleleSimilarity(IAllele one, IAllele two);
public void MutateGeneValueThrowsExceptionForZeroVariancePercentage()
{
IAllele geneValue = this.WrapInAlleleWithCorrectType(NumericalDomainTest.minimum);
Assert.Throws <ArgumentOutOfRangeException>(() => this._domain.MutateGeneValue(geneValue, variancePercentage: 0));
}
public void CrossoverRespectsSwitchProbability()
{
// Build parameter tree that consists of two dependent continuous parameters.
string rootParameterName = "parameterRoot";
string childParameterName = "parameterChild";
var rootParameter = new ValueNode <double>(rootParameterName, new ContinuousDomain());
var childParameter = new ValueNode <double>(childParameterName, new ContinuousDomain());
rootParameter.SetChild(childParameter);
// Build genome builder with that parameter tree and a specific crossover switch probability.
double crossoverSwitchParameter = 0.25;
AlgorithmTunerConfiguration config = new AlgorithmTunerConfiguration.AlgorithmTunerConfigurationBuilder()
.SetCrossoverSwitchProbability(crossoverSwitchParameter)
.Build(maximumNumberParallelEvaluations: 1);
var genomeBuilder = new GenomeBuilder(new ParameterTree(rootParameter), config);
// Build parents.
var parent1 = new Genome();
var parent2 = new Genome();
var parent1RootAllele = new Allele <double>(1);
var parent1ChildAllele = new Allele <double>(2);
var parent2RootAllele = new Allele <double>(3);
var parent2ChildAllele = new Allele <double>(4);
parent1.SetGene(rootParameterName, parent1RootAllele);
parent1.SetGene(childParameterName, parent1ChildAllele);
parent2.SetGene(rootParameterName, parent2RootAllele);
parent2.SetGene(childParameterName, parent2ChildAllele);
// Observe if children's genes come from the same parent or not.
int numberLoops = 1000;
int genesCameFromSameParent = 0;
for (int i = 0; i < numberLoops; i++)
{
var child = genomeBuilder.Crossover(parent1, parent2);
IAllele rootAllele = child.GetGeneValue(rootParameterName);
IAllele childAllele = child.GetGeneValue(childParameterName);
bool geneValuesInheritedFromSameParent =
(object.Equals(rootAllele, parent1RootAllele) && object.Equals(childAllele, parent1ChildAllele)) ||
(object.Equals(rootAllele, parent2RootAllele) && object.Equals(childAllele, parent2ChildAllele));
if (geneValuesInheritedFromSameParent)
{
genesCameFromSameParent++;
}
}
double[] observed = { genesCameFromSameParent, numberLoops - genesCameFromSameParent };
// We would expect each case according to switch probability:
int expectedSwitches = (int)(crossoverSwitchParameter * numberLoops);
double[] expected = { numberLoops - expectedSwitches, expectedSwitches };
// Use Chi-Squared Test.
var matchesSwitchProbabilityTest = new ChiSquareTest(expected, observed, degreesOfFreedom: numberLoops - 1);
Assert.False(
matchesSwitchProbabilityTest.Significant,
$"Crossover was found not to respect the switch probability by the Chi-Squared test with significance level of {matchesSwitchProbabilityTest.Size}.");
}
public void MutateGeneValueDoesNotThrowForVariancePercentage100()
{
IAllele geneValue = this.WrapInAlleleWithCorrectType(NumericalDomainTest.minimum);
this._domain.MutateGeneValue(geneValue, variancePercentage: 1);
}
private void CreateCoDominantControls(IAllele allele)
{
foreach (var all in _dominantAlleles)
{
var rep = GeneRepresentationBuilder.CreateName(all.Representation, allele.Representation);
var func = new Func<object, int>(CoDominantPopulation);
var cdAll = new Allele(rep, false);
var sp = _controlManager.CreateCoDominantPairLinq(rep, rep + " Population" + " Populus",
func, new ValueConverter());
var control = new AlleleControl(cdAll, sp, func, true);
control.UpdateControlValue();
_controls.Add(control);
}
}
public Gene(int value, IAllele allele)
{
Value = value;
Allele = allele;
}
private void CreateControl(IAllele allele, string representation)
{
var func = new Func<object, int>(AllelePopulation);
var sp = _controlManager.CreateDataPairLinq(representation, representation + " Population" + " Populus",
func, new ValueConverter(), allele);
var control = new AlleleControl(allele, sp, func);
_controls.Add(control);
}
public void CreateAllele(IAllele allele)
{
_alleles.Add(allele);
//CreateAlleleControls(allele);
if (allele.IsDominant) _dominantAlleles.Add(allele);
}
/// <summary>
///
/// </summary>
/// <param name="inactiveAlleles">The inactive IAlleles at this IGenomeUnit position in the IGenome.
/// These are the IAlleles that will not be used in the IGene's phenotype.</param>
/// <param name="chromosomeIndex">The IChromosome to which the IGene belongs.
/// 0 corresponds with the 1st IChromosome.
/// 1 corresponds with the 2nd IChromosome.</param>
/// <param name="geneLevel">0 Corresponds with the top-level IGenes that belong directly to IChromosomes.
/// 1+ Corresponds with the IGenes that belong to the IGenes at level 1.</param>
/// <param name="activeAllele">The active IAllele at this IGenomeUnit position in the IGenome.
///
/// This active IAllele is the IAllele whose DNA will be used to create the IGene's Phenotype.</param>
public GenomeUnit(IAllele activeAllele, IEnumerable<IAllele> inactiveAlleles,
int chromosomeIndex, int geneLevel)
: base(activeAllele: activeAllele, inactiveAlleles: inactiveAlleles,
chromosomeIndex: chromosomeIndex, geneLevel: geneLevel)
{
}
/// <summary>
/// Gets the percentage that IAllele one and IAllele two are similar.
/// 100% would be identical and 0% would indicate that the IAlleles share nothing.
/// </summary>
/// <param name="one">The first IAllele to compare.</param>
/// <param name="two">The second IAllele to compare.</param>
/// <returns>The percentage that IAllele one and IAllele two are similar.
/// 100% would be identical and 0% would indicate that the IAlleles share nothing.</returns>
public override double GetPercentageIAlleleSimilarity(IAllele one, IAllele two)
{
return this.GetPercentageIAlleleSimilarityDelegate(one: one, two: two);
}
private void CreateAlleleControls(IAllele allele)
{
if (allele.IsDominant) CreateCoDominantControls(allele);
//CreateControl(allele, allele.Representation);
}
