Constructor Detail

• ElitisticListPopulation

  public ElitisticListPopulation(List<Chromosome> chromosomes,
                         int populationLimit,
                         double elitismRate)
                          throws NullArgumentException,
                                 NotPositiveException,
                                 NumberIsTooLargeException,
                                 OutOfRangeException

  Creates a new ElitisticListPopulation instance.

  Parameters:

  chromosomes - list of chromosomes in the population

  populationLimit - maximal size of the population

  elitismRate - how many best chromosomes will be directly transferred to the next generation [in %]

  Throws:

  NullArgumentException - if the list of chromosomes is null

  NotPositiveException - if the population limit is not a positive number (< 1)

  NumberIsTooLargeException - if the list of chromosomes exceeds the population limit

  OutOfRangeException - if the elitism rate is outside the [0, 1] range

• ElitisticListPopulation

  public ElitisticListPopulation(int populationLimit,
                         double elitismRate)
                          throws NotPositiveException,
                                 OutOfRangeException

  Creates a new ElitisticListPopulation instance and initializes its inner chromosome list.

  Parameters:

  populationLimit - maximal size of the population

  elitismRate - how many best chromosomes will be directly transferred to the next generation [in %]

  Throws:

  NotPositiveException - if the population limit is not a positive number (< 1)

  OutOfRangeException - if the elitism rate is outside the [0, 1] range

Method Detail

• nextGeneration

  public Population nextGeneration()

  Start the population for the next generation. The elitismRate percents of the best chromosomes are directly copied to the next generation.

  Returns:

  the beginnings of the next generation.

• setElitismRate

  public void setElitismRate(double elitismRate)
                      throws OutOfRangeException

  Sets the elitism rate, i.e. how many best chromosomes will be directly transferred to the next generation [in %].

  Parameters:

  elitismRate - how many best chromosomes will be directly transferred to the next generation [in %]

  Throws:

  OutOfRangeException - if the elitism rate is outside the [0, 1] range

• getElitismRate

  public double getElitismRate()

  Access the elitism rate.

  Returns:

  the elitism rate