Package org.apache.commons.math.genetics

Class Chromosome

java.lang.Object
org.apache.commons.math.genetics.Chromosome
All Implemented Interfaces:
Comparable<Chromosome>, Fitness
Direct Known Subclasses:
AbstractListChromosome
public abstract class Chromosome extends Object implements Comparable<Chromosome>, Fitness
Individual in a population. Chromosomes are compared based on their fitness. The chromosomes are IMMUTABLE, and so their fitness is also immutable and therefore it can be cached.
Since:
2.0

  • Constructor Details

    • Chromosome

      public Chromosome()

  • Method Details

    • getFitness

      public double getFitness()
      Access the fitness of this chromosome. The bigger the fitness, the better the chromosome. Computation of fitness is usually very time-consuming task, therefore the fitness is cached.
      Returns:
      the fitness.

    • compareTo

      public int compareTo(Chromosome another)
      Compares two chromosomes based on their fitness. The bigger the fitness, the better the chromosome.
      Specified by:
      compareTo in interface Comparable<Chromosome>
      Parameters:
      another - another chromosome to compare
      Returns:
      • -1 if another is better than this
      • 1 if another is worse than this
      • 0 if the two chromosomes have the same fitness

    • searchForFitnessUpdate

      public void searchForFitnessUpdate(Population population)
      Searches the population for a chromosome representing the same solution, and if it finds one, updates the fitness to its value.
      Parameters:
      population - Population to search