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//  MOCHCRunner.java
//
//  Author:
//       Antonio J. Nebro 
//       Juan J. Durillo 
//
//  Copyright (c) 2011 Antonio J. Nebro, Juan J. Durillo
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU Lesser General Public License for more details.
// 
//  You should have received a copy of the GNU Lesser General Public License
//  along with this program.  If not, see .

package org.uma.jmetal.runner.multiobjective;

import org.uma.jmetal.algorithm.Algorithm;
import org.uma.jmetal.algorithm.multiobjective.mochc.MOCHC;
import org.uma.jmetal.algorithm.multiobjective.mochc.MOCHCBuilder;
import org.uma.jmetal.operator.CrossoverOperator;
import org.uma.jmetal.operator.MutationOperator;
import org.uma.jmetal.operator.SelectionOperator;
import org.uma.jmetal.operator.impl.crossover.HUXCrossover;
import org.uma.jmetal.operator.impl.mutation.BitFlipMutation;
import org.uma.jmetal.operator.impl.selection.RandomSelection;
import org.uma.jmetal.operator.impl.selection.RankingAndCrowdingSelection;
import org.uma.jmetal.problem.BinaryProblem;
import org.uma.jmetal.solution.BinarySolution;
import org.uma.jmetal.util.AlgorithmRunner;
import org.uma.jmetal.util.JMetalLogger;
import org.uma.jmetal.util.ProblemUtils;
import org.uma.jmetal.util.evaluator.impl.SequentialSolutionListEvaluator;
import org.uma.jmetal.util.fileoutput.SolutionSetOutput;
import org.uma.jmetal.util.fileoutput.impl.DefaultFileOutputContext;

import java.util.List;

/**
 * This class executes the algorithm described in:
 * A.J. Nebro, E. Alba, G. Molina, F. Chicano, F. Luna, J.J. Durillo
 * "Optimal antenna placement using a new multi-objective chc algorithm".
 * GECCO '07: Proceedings of the 9th annual conference on Genetic and
 * evolutionary computation. London, England. July 2007.
 */
public class MOCHCRunner {
  public static void main(String[] args) throws Exception {
    CrossoverOperator crossoverOperator;
    MutationOperator mutationOperator;
    SelectionOperator parentsSelection;
    SelectionOperator newGenerationSelection;
    Algorithm algorithm ;

    BinaryProblem problem ;

    String problemName ;
    if (args.length == 1) {
      problemName = args[0] ;
    } else {
      problemName = "org.uma.jmetal.problem.multiobjective.zdt.ZDT5";
    }

    problem = (BinaryProblem)ProblemUtils.loadProblem(problemName);

    crossoverOperator = new HUXCrossover(1.0) ;

    parentsSelection = new RandomSelection() ;

    newGenerationSelection = new RankingAndCrowdingSelection(100) ;

    mutationOperator = new BitFlipMutation(0.35) ;

    algorithm = new MOCHCBuilder(problem)
            .setInitialConvergenceCount(0.25)
            .setConvergenceValue(3)
            .setPreservedPopulation(0.05)
            .setPopulationSize(100)
            .setMaxEvaluations(25000)
            .setCrossover(crossoverOperator)
            .setNewGenerationSelection(newGenerationSelection)
            .setCataclysmicMutation(mutationOperator)
            .setParentSelection(parentsSelection)
            .setEvaluator(new SequentialSolutionListEvaluator())
            .build() ;

    AlgorithmRunner algorithmRunner = new AlgorithmRunner.Executor(algorithm)
            .execute() ;

    List population = ((MOCHC)algorithm).getResult() ;
    long computingTime = algorithmRunner.getComputingTime() ;

    new SolutionSetOutput.Printer(population)
            .setSeparator("\t")
            .setVarFileOutputContext(new DefaultFileOutputContext("VAR.tsv"))
            .setFunFileOutputContext(new DefaultFileOutputContext("FUN.tsv"))
            .print();

    JMetalLogger.logger.info("Total execution time: " + computingTime + "ms");
    JMetalLogger.logger.info("Objectives values have been written to file FUN.tsv");
    JMetalLogger.logger.info("Variables values have been written to file VAR.tsv");
  }
}