// evaporation of pheromones
protected void EvaporatePheromones(int antIndex)
{
double decreaseFactor = 1.0 - rho;
for (int i = 0; i < cities.Count; i++)
{
int j = Ants[antIndex].GetCityOfTour(i);
int l = Ants[antIndex].GetCityOfTour(i + 1);
Pheromones.DecreasePheromoneAs(j, l, decreaseFactor);
Pheromones.DecreasePheromoneAs(l, j, decreaseFactor);
}
}
// evaporation of pheromones
protected void EvaporatePheromones()
{
double decreaseFactor = 1.0 - rho;
for (int i = 0; i < cities.Count; i++)
{
for (int j = i + 1; j < cities.Count; j++)
{
Pheromones.DecreasePheromoneAs(i, j, decreaseFactor);
Pheromones.DecreasePheromoneAs(j, i, decreaseFactor);
}
}
}