private void UpdatePheromone(List <ACOCity> path)
{
double pathLength = TSPDistance.CalculateLengthOfPath <ACOCity, ACODistance>(path);
double deltaTau = Convert.ToDouble(_Props.Q) / pathLength;
for (int i = 0; i < path.Count - 1; i++)
{
ACODistance distance = (ACODistance)path[i].GetDistanceTo(path[i + 1]);
distance.Pheromone = (1 - Convert.ToDouble(_Props.Rho)) * distance.Pheromone + deltaTau;
}
}
private List <ACOCity> UpdatePathsData(List <List <ACOCity> > paths, List <ACOCity> bestPath)
{
foreach (List <ACOCity> path in paths)
{
if (bestPath == null)
{
bestPath = path;
}
else
{
double previousLength = TSPDistance.CalculateLengthOfPath <ACOCity, ACODistance>(bestPath);
double currentLength = TSPDistance.CalculateLengthOfPath <ACOCity, ACODistance>(path);
if (currentLength <= previousLength)
{
bestPath = path;
}
}
UpdatePheromone(path);
}
return(bestPath);
}