static void nQueensGeneticAlgorithmSearch()
{
System.Console.WriteLine("\nNQueensDemo GeneticAlgorithm -->");
try
{
IFitnessFunction <int> fitnessFunction = NQueensGenAlgoUtil.getFitnessFunction();
GoalTest <Individual <int> > goalTest = NQueensGenAlgoUtil.getGoalTest();
// Generate an initial population
ISet <Individual <int> > population = CollectionFactory.CreateSet <Individual <int> >();
for (int i = 0; i < 50; ++i)
{
population.Add(NQueensGenAlgoUtil.generateRandomIndividual(boardSize));
}
GeneticAlgorithm <int> ga = new GeneticAlgorithm <int>(boardSize,
NQueensGenAlgoUtil.getFiniteAlphabetForBoardOfSize(boardSize), 0.15);
// Run for a set amount of time
Individual <int> bestIndividual = ga.geneticAlgorithm(population, fitnessFunction, goalTest, 1000L);
System.Console.WriteLine("Max Time (1 second) Best Individual=\n"
+ NQueensGenAlgoUtil.getBoardForIndividual(bestIndividual));
System.Console.WriteLine("Board Size = " + boardSize);
//System.Console.WriteLine("# Board Layouts = " + (new BigDecimal(boardSize)).pow(boardSize)/*);*/
System.Console.WriteLine("Fitness = " + fitnessFunction.apply(bestIndividual));
System.Console.WriteLine("Is Goal = " + goalTest(bestIndividual));
System.Console.WriteLine("Population Size = " + ga.getPopulationSize());
System.Console.WriteLine("Iterations = " + ga.getIterations());
System.Console.WriteLine("Took = " + ga.getTimeInMilliseconds() + "ms.");
// Run till goal is achieved
bestIndividual = ga.geneticAlgorithm(population, fitnessFunction, goalTest, 0L);
System.Console.WriteLine("");
System.Console
.WriteLine("Goal Test Best Individual=\n" + NQueensGenAlgoUtil.getBoardForIndividual(bestIndividual));
System.Console.WriteLine("Board Size = " + boardSize);
//System.Console.WriteLine("# Board Layouts = " + (new BigDecimal(boardSize)).pow(boardSize)/*);*/
System.Console.WriteLine("Fitness = " + fitnessFunction.apply(bestIndividual));
System.Console.WriteLine("Is Goal = " + goalTest(bestIndividual));
System.Console.WriteLine("Population Size = " + ga.getPopulationSize());
System.Console.WriteLine("Itertions = " + ga.getIterations());
System.Console.WriteLine("Took = " + ga.getTimeInMilliseconds() + "ms.");
}
catch (Exception e)
{
throw e;
}
}
public void setUp()
{
fitnessFunction = NQueensGenAlgoUtil.getFitnessFunction();
goalTest = NQueensGenAlgoUtil.getGoalTest();
}