public IList <StringUnit> Breed()
{
//Get random index and split there.
var len = ParentA.Genome.Length;
var splitIndex = ThreadRandom.Next(len);
var parentAFirst = ParentA.Genome.ToString(0, splitIndex);
var parentASecond = ParentA.Genome.ToString(splitIndex, len - (splitIndex));
var parentBFirst = ParentB.Genome.ToString(0, splitIndex);
var parentBSecond = ParentB.Genome.ToString(splitIndex, len - (splitIndex));
//AF -> BS and BF -> AS
var firstChild = new StringUnit(new StringBuilder(string.Concat(parentAFirst, parentBSecond)), ParentA, ParentB);
var secondChild = new StringUnit(new StringBuilder(string.Concat(parentBFirst, parentASecond)), ParentA, ParentB);
var children = new List <StringUnit>()
{
firstChild, secondChild
};
//Attempt mutation
//todo: make Mutate method part of IPopulationUnit to avoid type casting here?
foreach (StringUnit child in children)
{
child.Mutate();
child.CalculateFitness(TargetString);
}
return(children);
}
public StringUnit(StringBuilder genome, StringUnit parentA, StringUnit parentB)
{
ParentA = parentA;
ParentB = parentB;
_isRoot = false;
DefaultFitness = Globals.DefaultFitness;
SetupBuilder(genome);
}
public void InsertRandomUnits(int count)
{
for (int i = 0; i < count; i++)
{
var newUnit = new StringUnit(RandomStringGenome(TargetLength), true);
newUnit.SetFitness(TargetLength);
AddUnitToPopulation(newUnit);
}
}
public void SeedPopulation()
{
for (int i = 0; i < PopulationSize; i++)
{
var newUnit = new StringUnit(RandomStringGenome(TargetLength), true);
newUnit.SetFitness(TargetLength);
AddUnitToPopulation(newUnit);
}
}
public void ReplaceUnit(StringUnit otherUnit)
{
this.Genome.Clear().Append(otherUnit.Genome);
this.ParentA = otherUnit.ParentA;
this.ParentB = otherUnit.ParentB;
this.IsRoot = otherUnit.IsRoot;
this.Fitness = otherUnit.Fitness;
this.DefaultFitness = otherUnit.DefaultFitness;
}
//Reusal
public void ReplaceUnit(string newGenome, StringUnit parentA, StringUnit parentB, bool isRoot, int fitness,
int defaultFitness)
{
this.Genome.Clear().Append(newGenome);
this.ParentA = parentA;
this.ParentB = parentB;
this.IsRoot = isRoot;
this.Fitness = fitness;
this.DefaultFitness = defaultFitness;
}
public StringUnit GenerateRandomPopulationUnit(bool isRoot, StringUnit parentA, StringUnit parentB)
{
var newUnit = new StringUnit(RandomStringGenome(TargetLength), isRoot);
if (parentA == null)
{
return(newUnit);
}
newUnit.ParentA = parentA;
newUnit.ParentB = parentB;
return(newUnit);
}
public StringFamilialUnit(StringUnit parentA, StringUnit parentB, string targetString)
{
this.ParentA = parentA;
this.ParentB = parentB;
this.TargetString = targetString;
}
public void AddUnitToPopulation(StringUnit unit)
{
this.CurrentPopulation.Add(unit);
}
