protected override void PreFilterProperties(IDictionary properties)
{
base.PreFilterProperties(properties);
#if NOTDEF
// We add a design-time property called TrackSelection that is used to track
// the active selection. If the user sets this to true (the default), then
// we will listen to selection change events and update the control's active
// control to point to the current primary selection.
GA ga = (GA)Component;
if (ga.EncodingType == EncodingType.Custom)
{
properties.Remove("ChromosomeLength");
}
if (ga.EncodingType != EncodingType.Integer)
{
properties.Remove("MaxIntValue");
properties.Remove("MinIntValue");
}
if (ga.EncodingType != EncodingType.Real)
{
properties.Remove("MaxDoubleValue");
properties.Remove("MinDoubleValue");
}
// properties["TrackSelection"] = TypeDescriptor.CreateProperty(
// this.GetType(), // the type this property is defined on
// "TrackSelection", // the name of the property
// typeof(bool), // the type of the property
// new Attribute[] {CategoryAttribute.Design}); // attributes
#endif
}
/*
* mode - most frequently occuring score.
* median - midpoint of distribution, above which have of the scores fall, and below
* which the other half fall.
*/
/// <summary>
/// Creates a PopulationSummary from a Population.
/// </summary>
/// <param name="ga">The GA.</param>
/// <param name="Population">The Population for which the
/// PopulationSummary will provide summary information.
/// </param>
public PopulationSummary(GA ga, Population Population)
{
double totalObjective;
lowestObjective = System.Double.MaxValue;
highestObjective = System.Double.MinValue;
totalObjective = 0;
foreach (Chromosome c in Population.Chromosomes)
{
totalObjective += c.RawObjective;
if (c.RawObjective < LowestObjective)
{
lowestObjective = c.RawObjective;
if (ga.ObjectiveType == ObjectiveType.MinimizeObjective)
{
bestChromosome = c;
}
}
if (c.RawObjective > HighestObjective)
{
highestObjective = c.RawObjective;
if (ga.ObjectiveType == ObjectiveType.MaximizeObjective)
{
bestChromosome = c;
}
}
}
meanObjective = totalObjective / Population.Chromosomes.Length;
//
// Variance is the average squared deviation from the mean.
// Standard Deviation is just the square root of this.
//
double sum = 0;
foreach (Chromosome c in Population.Chromosomes)
{
double deviation;
double squaredDeviation;
deviation = c.RawObjective - meanObjective;
squaredDeviation = deviation * deviation;
sum += squaredDeviation;
}
variance = sum / (Population.Chromosomes.Length - 1);
standardDeviation = Math.Sqrt(variance);
}
/// <summary>
/// Creates a new Population of Chromosomes.
/// </summary>
/// <param name="ga">The GA.</param>
/// <param name="populationSize">The size of the population.</param>
public Population(GA ga, int populationSize)
{
this.ga = ga;
this.populationSize = populationSize;
chromosomes = new Chromosome[PopulationSize];
}
