1 ## Copyright (C) 2008, 2010 Luca Favatella <slackydeb@gmail.com>
3 ## This program is free software; you can redistribute it and/or modify
4 ## it under the terms of the GNU General Public License as published by
5 ## the Free Software Foundation; either version 2 of the License, or
6 ## (at your option) any later version.
8 ## This program is distributed in the hope that it will be useful,
9 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 ## GNU General Public License for more details.
13 ## You should have received a copy of the GNU General Public License
14 ## along with this program; If not, see <http://www.gnu.org/licenses/>.
16 ## Author: Luca Favatella <slackydeb@gmail.com>
20 __ga_problem_update_state_at_each_generation__ (state, problem,
22 if ((state.Generation > 0) || isempty (problem.options.InitialScores))
23 state.Score(1:problem.options.PopulationSize, 1) = \
24 __ga_scores__ (problem, state.Population);
25 else ## (Generation == 0) && (! isempty (InitialScores))
26 nrIS = rows (problem.options.InitialScores);
27 #assert (rows (problem.options.InitialPopulation) <= problem.options.PopulationSize); ## DEBUG
28 if (nrIS <= rows (problem.options.InitialPopulation))
29 missing_rows = (nrIS+1):problem.options.PopulationSize;
30 state.Score(1:problem.options.PopulationSize, 1) = \
31 [problem.options.InitialScores(:, 1);
32 (__ga_scores__ (problem, state.Population(missing_rows, :)))
35 error ("rows (InitialScores) > rows (InitialPopulation)");
38 state.Expectation(1, 1:problem.options.PopulationSize) = \
39 problem.options.FitnessScalingFcn (state.Score, private_state.nParents);
40 state.Best(state.Generation + 1, 1) = min (state.Score);
45 %! state.Generation = 0;
46 %! problem = struct ("fitnessfcn", @rastriginsfcn, "nvars", 2, "options", gaoptimset ("Generations", 10, "InitialScores", [0; 0; 0]));
48 %! __ga_problem_update_state_at_each_generation__ (state, problem, unused);