protected override bool _Evaluate(out double deltaTime, out double deltaPenalty)
{
// Initialize variables:
deltaTime = double.NaN;
deltaPenalty = double.NaN;
if (toAdd == null)
{
return(false);
}
// Get the possible day combinations the order may be added:
List <int[]> combis = GD.AllowedDayCombinations[nAdditions].ToList();
// Try each day combination:
while (!(combis.Count == 0))
{
int[] combi = combis[StaticRandom.Next(0, combis.Count)];
int everyDayInCombiAllowed = 0;
deltas = new List <double>(nAdditions);
whereToAdd = new List <Node>(nAdditions);
whereToAddDays = new List <int>(nAdditions);
whereToAddTrucks = new List <int>(nAdditions);
foreach (int day in combi)
{
// Try to add order in a random truck:
int truck = StaticRandom.Next(0, 2);
if (State.DayRoutes[day][truck].EvaluateRandomAdd(toAdd, out double delta1, out Node where1)) // MISS NIET BEIDE TRUCKS PROBEREN
{
deltas.Add(delta1);
whereToAdd.Add(where1);
whereToAddDays.Add(day);
whereToAddTrucks.Add(truck);
everyDayInCombiAllowed++;
continue;
}
protected override bool _Evaluate(out double deltaTime, out double deltaPenalty)
{
// Pick random order:
int ind = StaticRandom.Next(0, State.UnScheduledOrders.Count);
// Evaluate the addition:
addOp = new AddOperation(State, ind);
bool possible = addOp.Evaluate();
deltaTime = addOp.DeltaTime;
deltaPenalty = addOp.DeltaPenalty;
return(possible);
}
public override bool GetNext(double[] probDist, int nOps)
{
// Create an array of operators that we are going to perform to generate neighbors
List <NOp> ops = new List <NOp>(schedule.GetOperations(probDist, nOps));
// Take a random operator
// if it may be performed
// - Apply it if the operator decreases the score
// - Apply the operator with chance decpending on the temperator if the score is increased
while (ops.Count != 0)
{
int i = StaticRandom.Next(0, ops.Count);
NOp op = ops[i];
ops.RemoveAt(i);
if (op.Evaluate())
{
double delta = op.TotalDelta;
if (delta < 0)
{
op.Apply();
return(true);
}
else
{
double p = Prob(delta, c);
double r = StaticRandom.NextDouble();
if (p > r)
{
op.Apply();
return(true);
}
}
}
c *= a; // Update temperature
}
return(false);
}