/// <summary>
/// Calculates the probability of selecting a given node
/// </summary>
public virtual double CalculateProbability(INode currentNode, NodeTiming nodeTiming)
{
var node = nodeTiming.Node as NodeBase;
var pheromone = PheromoneMatrix.GetValue(currentNode, node);
double topProbability = 1.0;
if (pheromone > 0)
{
if (Alpha > 0)
{
topProbability *= Math.Pow(pheromone, Alpha);
}
}
var routeStatistics = _routeService.CalculateRouteStatistics(currentNode, node);
var performanceMeasure = _objectiveFunction.GetObjectiveMeasure(routeStatistics);
if (Beta > 0 && performanceMeasure > 0)
{
topProbability *= Math.Pow(1 / performanceMeasure, Beta);
}
if (node.Priority > 1)
{
;
}
var priority = Math.Max(node.Priority, 1);
if (Zeta > 0)
{
topProbability *= 1 + Math.Pow(Zeta, priority);
}
return(topProbability);
}
