Examples of jcgp.backend.population.Population

jcgp.backend.population.Population

This class primarily holds a collection of chromosomes. In addition, it provides a few utility methods for manipulating and copying chromosomes, useful for evolutionary strategies.

{@code copyChromosome()} is used to create copies of chromosomes, though it is also possible to create a new instance of population directly from a seed chromosome using the right constructor.

For convenience, a random chromosome can be retrieved using {@code getRandomChromosome()}, which is guaranteed to use the experiment's specified seed. If an entirely random population is needed, {@code reinitialise()} should be used to randomiseall chromosomes without creating a new instance of {@code Population}. @author Eduardo Pedroni

    resources.setFunctionSet(new SymbolicRegressionFunctions());
  }


  @Before
  public void setUp() throws Exception {
    population = new Population(resources);
  }

  public void preinitialisedChromosomeTest() {
    // the original chromosome that will be cloned
    Chromosome oc = new Chromosome(resources);


    // initialise a population with a copy of it
    population = new Population(oc, resources);
    // check that the first parent chromosome is identical to, but not the same instance as, the one given
    assertTrue("Incorrect chromosome in population.", population.get(0).compareGenesTo(oc) && population.get(0) != oc);
  }

    setEvolutionaryStrategy(0);
    setMutator(0);
    setProblem(0);


    // create a new population
    population = new Population(resources);
  }

    if (resources.arity() < 1) {
      resources.println("[CGP] Error: arity is smaller than 1. Check that at least one function is enabled");
      return;
    }
    finished = false;
    population = new Population(resources);
    resetStatisticsValues();
    resources.setCurrentGeneration(1);
    resources.setCurrentRun(1);
    resources.println("*********************************************************");
    resources.println("[CGP] New experiment: " + problem.toString());

Examples of jcgp.backend.population.Population

Related Classes of jcgp.backend.population.Population