public override void Prepare(
IList <IGenome> sampleGenomes,
GenomeProductionSession thisSession,
GenomeProductionSession totalSession,
int totalNbToSelect)
{
base.Prepare(
sampleGenomes,
thisSession,
totalSession,
totalNbToSelect);
var samplesCount = ComputeParticipantsCount(sampleGenomes.Count());
var candidates = sampleGenomes.Take(samplesCount).ToList();
var minFitness = candidates.Min(x => x.Fitness);
if (minFitness < 0)
{
minFitness *= -1;
}
else
{
minFitness = 0;
}
genomeAndFitn = candidates.ToDictionary(
x => x,
x => x.Fitness + minFitness + float.Epsilon);
usedSetsOfGenomes = new List <IGenome[]>();
}
public IList <IGenome> Produce(
int totalRequired,
IGenerationManager generationManager)
{
var totalSession = new GenomeProductionSession(totalRequired);
foreach (var producer in Producers)
{
ExecuteProducer(generationManager, totalSession, producer);
}
while (totalSession.CurrentlyProduced.Count < totalRequired)
{
var currentCount = totalSession.CurrentlyProduced.Count;
ExecuteProducer(generationManager, totalSession, Producers.Last());
if (currentCount == totalSession.CurrentlyProduced.Count)
{
throw new Exception("The last producer MUST yield at least " +
"one genome");
}
}
Trace.Assert(totalSession.CurrentlyProduced.Count == totalRequired);
return(totalSession.CurrentlyProduced);
}
protected override IList <IGenome> DoProduction(
IList <IGenome> sampleGenomes,
GenomeProductionSession thisSession,
GenomeProductionSession totalSession)
{
var selections = (int)Math.Ceiling((float)thisSession.requiredNb / Crossover.NbOfChildren);
var totalNbToSelct = selections * Crossover.NbOfParents;
Selection.Prepare(
sampleGenomes,
thisSession,
totalSession,
totalNbToSelect: totalNbToSelct);
Crossover.Prepare(
sampleGenomes,
thisSession,
totalSession);
while (thisSession.CurrentlyProduced.Count < thisSession.requiredNb)
{
var parents = Selection.Select(Crossover.NbOfParents).ToArray();
var children = Crossover.Cross(parents);
var usedChildren = thisSession.AddNewProducedGenomes(children);
foreach (var child in usedChildren)
{
this.MutationManager.ApplyMutations(child);
}
}
return(thisSession.CurrentlyProduced);
}
public override void Prepare(
IList <IGenome> sampleGenomes,
GenomeProductionSession thisSession,
GenomeProductionSession totalSession,
int totalNbToSelect)
{
base.Prepare(
sampleGenomes,
thisSession,
totalSession,
totalNbToSelect);
var samplesCount = ComputeParticipantsCount(sampleGenomes.Count());
var candidates = sampleGenomes.Take(samplesCount).ToList();
var minFitness = candidates.Min(x => x.Fitness);
if (minFitness < 0)
{
minFitness *= -1;
}
else
{
minFitness = 0;
}
var genomAndFitn = candidates.ToDictionary(
x => x,
x => x.Fitness + minFitness + float.Epsilon);
var fitnessSum = genomAndFitn.Values.Sum();
allParents = new Queue <IGenome>(totalNbToSelect);
for (int i = 0; i < totalNbToSelect; i++)
{
var targetFitness = GARandomManager.NextFloat(0, fitnessSum);
IGenome target = null;
foreach (var pair in genomAndFitn)
{
if (targetFitness <= pair.Value)
{
target = pair.Key;
break;
}
else
{
targetFitness -= pair.Value;
}
}
Debug.Assert(target != null);
allParents.Enqueue(target);
fitnessSum -= genomAndFitn[target];
genomAndFitn.Remove(target);
}
}
public virtual void Prepare(
IEnumerable <IGenome> sampleGenomes,
GenomeProductionSession thisSession,
GenomeProductionSession totalSession)
{
this.sampleGenomes = sampleGenomes;
this.thisSession = thisSession;
this.totalSession = totalSession;
}
public IList <IGenome> Produce(
IList <IGenome> sampleGenomes,
GenomeProductionSession thisSession,
GenomeProductionSession totalSession)
{
var result = DoProduction(sampleGenomes, thisSession, totalSession);
Trace.Assert(result.EveryoneIsUnique());
return(result);
}
public virtual void Prepare(
IList <IGenome> sampleGenomes,
GenomeProductionSession thisSession,
GenomeProductionSession totalSession,
int totalNbToSelect)
{
this.sampleGenomes = sampleGenomes;
this.thisSession = thisSession;
this.totalSession = totalSession;
this.totalNbToSelect = totalNbToSelect;
}
protected void ExecuteProducer(
IGenerationManager generationManager,
GenomeProductionSession totalSession,
IGenomeProducer producer)
{
var requiredNb = GetProducerNbOfGenomesToMake(
totalSession.requiredNb,
totalSession.requiredNb - totalSession.CurrentlyProduced.Count,
producer);
var thisSession = new GenomeProductionSession(requiredNb);
producer.Produce(
generationManager.GetGenomes().ToArray(),
thisSession,
totalSession
);
totalSession.Merge(thisSession);
}
public IList <IGenome> Produce(
IList <IGenome> sampleGenomes,
GenomeProductionSession thisSession,
GenomeProductionSession totalSession)
{
selection.Prepare(
sampleGenomes,
thisSession,
totalSession,
thisSession.requiredNb);
var participants = selection.Select(thisSession.requiredNb);
var produced = participants.Select(x => x.CreateNew(x.Genes))
.ToArray();
Trace.Assert(produced.EveryoneIsUnique());
thisSession.RegisterParticipants(participants);
thisSession.AddNewProducedGenomes(produced);
return(produced);
}
public override void Prepare(
IList <IGenome> sampleGenomes,
GenomeProductionSession thisSession,
GenomeProductionSession totalSession,
int totalNbToSelect)
{
base.Prepare(
sampleGenomes,
thisSession,
totalSession,
totalNbToSelect);
if (sampleGenomes.Count() < totalNbToSelect)
{
var msg = string.Format("Not enough samples: {0} available {1} are asked",
sampleGenomes.Count(), totalNbToSelect);
throw new Exception(msg);
}
var parents = sampleGenomes.OrderByDescending(g => g.Fitness)
.Take(totalNbToSelect);
allParents = new Queue <IGenome>(parents);
}
protected abstract IList <IGenome> DoProduction(
IList <IGenome> sampleGenomes,
GenomeProductionSession thisSession,
GenomeProductionSession totalSession);
