void Replace(Chromosome[] children)
{
Population nextPopulation = new Population(this, population.PopulationSize);
for (int i = 0; i < populationSize; i++)
{
//
// Since the recombination record for a chromosome may contain a
// pointer to chromosome's in the previous population, it has to be
// cleared out. This prevents us from getting an unbroken reference
// chain between the current population's chromosomes all the way back
// to the first population (which would prevent the garbage collector
// from reclaiming any chromosome memory).
// (There is probably some way we can configure how deep we want
// to remember recombination records. But that might be overkill
// if we get everything serializing nicely.)
//
population.Chromosomes[i].Parents = null;
nextPopulation.Chromosomes[i] = children[i];
nextPopulation.Chromosomes[i].ID = nextChromosomeID++;
}
NewPopulationEventArgs e = new NewPopulationEventArgs();
e.OldPopulation = population;
e.NewPopulation = nextPopulation;
e.Generation = generation;
OnNewPopulation(e);
population = nextPopulation; // BUGBUG: should move this before the call out
}
static void OnNewPopulation_ShowParents(object o, NewPopulationEventArgs e)
{
//
// 00101110
// + 10100010
// ----^---
// = 00100010
//
foreach(Chromosome c in e.NewPopulation.Chromosomes)
{
Console.WriteLine( " {0}", c.Parents[0]);
Console.WriteLine( "+ {0}", c.Parents[1]);
Console.Write( " ");
for(int i=0;i<c.CrossoverPoint;i++)
{
Console.Write("--");
}
Console.Write("^-");
for(int i=c.CrossoverPoint+1;i<c.Genes.Length;i++)
{
Console.Write("--");
}
Console.WriteLine();
Console.WriteLine( "= {0}", c);
Console.WriteLine();
}
}
/// <summary>
/// Raises the NewPopulation event.
/// </summary>
/// <param name="e"></param>
protected virtual void OnNewPopulation(NewPopulationEventArgs e)
{
if (NewPopulation != null)
{
NewPopulation(this, e);
}
}
void NewPopulationHandler(object sender, NewPopulationEventArgs e)
{
IFormatter formatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
Stream stream = new FileStream(filenameBase + count + filenameExt, FileMode.Create, FileAccess.Write, FileShare.None);
formatter.Serialize(stream, e.NewPopulation);
stream.Close();
count++;
}
void NewPopulationHandler(object sender, NewPopulationEventArgs e)
{
IFormatter formatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
Stream stream = new FileStream(filenameBase + count + filenameExt, FileMode.Create, FileAccess.Write, FileShare.None);
formatter.Serialize(stream, e.NewPopulation);
stream.Close();
count++;
}
//
// Handler for the "NewPopulation" event that is raised by the GA
// component each time a new population has been evaluated. We take
// the opportunity to print out information about the best chromosome
// in the just-evaluated generation.
//
static void OnNewPopulation_ShowSummary(object o, NewPopulationEventArgs e)
{
Chromosome bestChromosome = e.OldPopulation.Summary.BestChromosome;
Console.WriteLine( "{0}: {1} ({2})",
e.Generation,
bestChromosome,
bestChromosome.RawObjective
);
}
static void OnNewPopulation(object o, NewPopulationEventArgs e)
{
Console.WriteLine();
for(int i=0;i<e.NewPopulation.PopulationSize;i++)
{
Console.WriteLine(
"{0,2}) {1} {2,2}) {3}",
e.OldPopulation.Chromosomes[i].ID,
e.OldPopulation.Chromosomes[i],
e.NewPopulation.Chromosomes[i].ID,
e.NewPopulation.Chromosomes[i]
);
}
}
static void OnNewPopulation(object o, NewPopulationEventArgs e)
{
//Console.WriteLine("Gen {0}: {1}", gen++, e.OldPopulation.Summary.BestChromosome);
Console.WriteLine(e.OldPopulation.Summary);
}
//
// Handler for the "NewPopulation" event that is raised by the GA
// component each time a new population has been evaluated. We take
// the opportunity to print out some of the summary data for the
// just-evaluated generation.
//
static void OnNewPopulation_ShowSummary(object o, NewPopulationEventArgs e)
{
Population oldPopulation = e.OldPopulation; // the just-evaluated population
Console.WriteLine( "Generation: {0}", e.Generation );
Console.WriteLine( " Highest Objective: {0}", oldPopulation.Summary.HighestObjective );
Console.WriteLine( " Lowest Objective : {0}", oldPopulation.Summary.LowestObjective );
Console.WriteLine( " Best Individual : {0}", oldPopulation.Summary.BestChromosome );
}
void OnNewPopulation(object o, NewPopulationEventArgs e)
{
//System.Threading.Monitor.Enter(this);
currentPopulationSummary = e.OldPopulation.Summary;
//System.Threading.Monitor.Exit(this);
axMSChart1.RowCount++;
axMSChart1.DataGrid.SetData(
++generation,
1,
currentPopulationSummary.BestChromosome.RawObjective,
0
);
graphPanel.Invalidate();
}
static void OnNewPopulation_ShowSummary(object o, NewPopulationEventArgs e)
{
Console.WriteLine( e.OldPopulation.Summary.ToString() );
}
void Replace(Chromosome[] children)
{
Population nextPopulation = new Population( this, population.PopulationSize );
for(int i=0;i<populationSize;i++)
{
//
// Since the recombination record for a chromosome may contain a
// pointer to chromosome's in the previous population, it has to be
// cleared out. This prevents us from getting an unbroken reference
// chain between the current population's chromosomes all the way back
// to the first population (which would prevent the garbage collector
// from reclaiming any chromosome memory).
// (There is probably some way we can configure how deep we want
// to remember recombination records. But that might be overkill
// if we get everything serializing nicely.)
//
population.Chromosomes[i].Parents = null;
nextPopulation.Chromosomes[i] = children[i];
nextPopulation.Chromosomes[i].ID = nextChromosomeID++;
}
NewPopulationEventArgs e = new NewPopulationEventArgs();
e.OldPopulation = population;
e.NewPopulation = nextPopulation;
e.Generation = generation;
OnNewPopulation( e );
population = nextPopulation; // BUGBUG: should move this before the call out
}
/// <summary>
/// Raises the NewPopulation event.
/// </summary>
/// <param name="e"></param>
protected virtual void OnNewPopulation(NewPopulationEventArgs e)
{
if ( NewPopulation != null )
{
NewPopulation(this, e);
}
}
static void OnNewPopulation(object o, NewPopulationEventArgs e)
{
Chromosome c = e.OldPopulation.Summary.BestChromosome;
Console.WriteLine("Best of Generation: {0}", e.OldPopulation.Summary.BestChromosome);
Console.WriteLine(" cost = {0}", Objective.GetCost(c));
Console.WriteLine(" value = {0}", Objective.GetValue(c));
Console.WriteLine(" objective = {0}", c.RawObjective );
}
