static void CrossOptimize()
{
var optimizer = new TwoOptimizer(cities);
TaskLogger.TaskName = "Cross-optimization";
optimizer.ClusterSet = nnCluster;
optimizer.CrossOptimize(secondBestTour, bestTour);
var newDistance = cities.GetDistance(secondBestTour);
if (!AreTourValid())
{
TaskLogger.Stop();
Console.WriteLine("Some error in the algorithm!!");
Console.ReadKey();
return;
}
if (newDistance < secondBestTourDistance && newDistance > bestTourDistance)
{
SaveTour(secondBestTour, SecondBestTourFileName);
SaveTour(bestTour, BestTourFileName);
}
UpdateLoggerFooter();
}
static void Main(string[] args)
{
TaskLogger.Start();
ParseData();
InitializeClusterSet();
InitializeBestTour();
InitializeSecondBestTour();
UpdateLoggerFooter();
CrossOptimize();
Console.WriteLine("Genetic?");
Console.ReadKey();
var optimizer = new TwoOptimizer(cities);
var geneticEngine = new GeneticTspEngine(cities);
var nnTourFinder = new NNTourFinder(cities);
while (secondBestTourDistance > TargetDistance)
{
TaskLogger.TaskName = "Genetic algorithm on first tour";
geneticEngine.StartFromKnownSolutions(bestTour);
while (geneticEngine.CurrentGeneration < 1000)
{
geneticEngine.NextGeneration();
var currentSolution = geneticEngine.CurrentBestSolution;
if (currentSolution.Distance < bestTourDistance)
{
bestTour = currentSolution;
bestTourDistance = currentSolution.Distance;
SaveTour(bestTour, BestTourFileName);
UpdateLoggerFooter();
}
}
TaskLogger.TaskName = "Optimizationg of first tour";
TaskLogger.ShowProgress();
var gain = 0.0;
do
{
var oldDistance = bestTourDistance;
optimizer.Optimize(bestTour);
bestTourDistance = cities.GetDistance(bestTour);
UpdateLoggerFooter();
gain = oldDistance - bestTourDistance;
if (gain > 0)
SaveTour(bestTour, BestTourFileName);
} while (gain > 1000.0);
TaskLogger.TaskName = "Genetic algorithm on second disjoint tour";
geneticEngine.Reset();
geneticEngine.StartFromKnownSolutions(
secondBestTour,
new IntegerPermutation(nnTourFinder.FindRandomDisjointTour(bestTour)));
while (geneticEngine.CurrentGeneration < 1000)
{
geneticEngine.NextGeneration();
foreach (var currentSolution in geneticEngine.CurrentSolutionPool)
{
if (currentSolution.Distance > secondBestTourDistance)
break;
if (!CheckDisjointness(bestTour, secondBestTour))
continue;
if (currentSolution.Distance < secondBestTourDistance)
{
secondBestTour = currentSolution;
secondBestTourDistance = currentSolution.Distance;
SaveTour(secondBestTour, SecondBestTourFileName);
UpdateLoggerFooter();
}
}
}
TaskLogger.TaskName = "Optimization of second disjoint tour";
TaskLogger.ShowProgress();
do
{
var oldDistance = secondBestTourDistance;
optimizer.OptimizeDisjoint(secondBestTour, bestTour);
secondBestTourDistance = cities.GetDistance(secondBestTour);
UpdateLoggerFooter();
gain = oldDistance - secondBestTourDistance;
if (gain > 0)
SaveTour(secondBestTour, SecondBestTourFileName);
} while (gain > 1000.0);
}
TaskLogger.Stop();
}
