//TODO: implement maximum value
public Real GetValue(IAlgorithm algorithm)
{
SinglePopulationPSO pso = algorithm as SinglePopulationPSO;
int particles = pso.SwarmSize;
double sum = 0;
for (int i = 0; i < particles; i++)
{
Vector pos = pso.Particles[i].Position;
Vector prevPos = pso.Particles[i].PreviousPosition;
//calculate the difference and norm in one loop
double norm = 0;
for (int j = 0; j < pos.Length; j++)
{
double dist = pos[j] - prevPos[j];
norm += dist * dist;
}
sum += Math.Sqrt(norm);
}
return(new Real(sum / particles));
}
public Real GetValue(IAlgorithm algorithm)
{
SinglePopulationPSO pso = algorithm as SinglePopulationPSO;
double distance = 0;
Vector center = Center.GetCenter(pso.Particles);
for (int i = 0; i < pso.Particles.Count; i++)
{
distance += DistanceMeasure.Measure(center, pso.Particles[i].Position);
}
return(new Real(distance / pso.SwarmSize));
}
public Real GetValue(IAlgorithm algorithm)
{
SinglePopulationPSO pso = algorithm as SinglePopulationPSO;
int violations = 0;
for (int i = 0; i < pso.Particles.Count; i++)
{
if (!pso.Particles[i].Position.IsInsideBounds(algorithm.Problem.ProblemDomain.DimensionBounds))
{
violations++;
}
}
return(new Real((double)violations / pso.Particles.Count));
}
