GOclasses/basic/population.h

   1 /*
   2  *  population.h
   3  *  SeGMO, a Sequential Global Multiobjective Optimiser
   4  *
   5  *  Created by Dario Izzo on 5/16/08.
   6  *  Copyright 2008 ¿dvanced Concepts Team (European Space Agency). All rights reserved.
   7  *
   8  */
   9
  10 #ifndef POPULATION_H
  11 #define POPULATION_H
  12
  13 #include <vector>
  14
  15 #include "GOproblem.h"
  16 #include "constants.h"
  17 #include "individual.h"
  18 #include "rng.h"
  19
  20 class Population{
  21 public:
  22     //Methods
  23     // TODO: pass by reference here, why the copies?
  24         void createRandomPopulation(const std::vector<double> &, const std::vector<double> &, int N, rng_double_type &);
  25         void resetVelocities(const std::vector<double> &, const std::vector<double> &, rng_double_type &);
  26         void evaluatePopulation(GOProblem &);
  27         void addIndividual(const Individual &);
  28         void substituteIndividual(const Individual &, int);
  29         double evaluateMean() const;
  30         double evaluateStd() const;
  31         unsigned int size () const;
  32         Individual extractBestIndividual() const;
  33         Individual extractWorstIndividual() const;
  34         Population extractRandomDeme(int, std::vector<int> &, rng_double_type &);
  35         void insertDeme(const Population &, const std::vector<int> &);
  36         void insertBestInDeme(const Population &, const std::vector<int> &);
  37         void insertDemeForced(const Population &, const std::vector<int> &);
  38
  39         //Operators
  40         Individual &operator[](int);
  41         const Individual &operator[](int) const;
  42         void operator=(const Population &newpop);
  43         void operator=(const Individual &x);
  44
  45         //logging function
  46         friend std::ostream& operator<<(std::ostream& s, Population& pop);
  47 private:
  48         std::vector<Individual> pop;
  49 };//class Population
  50
  51 std::ostream& operator<<(std::ostream& s, Population& pop);
  52 #endif