Changeset 6909 for branches/VRP/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/Potvin/Moves/PickupDelivery/PDRearrange

Timestamp:

10/12/11 15:45:48 (13 years ago)

Author:

svonolfe

Message:

Fixed more isses that occured in dynamic instances (#1177)

Location:

branches/VRP/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/Potvin/Moves/PickupDelivery/PDRearrange

Files:

• PotvinPDRearrangeMultiMoveGenerator.cs (modified) (1 diff)
• PotvinPDRearrangeSingleMoveGenerator.cs (modified) (1 diff)

branches/VRP/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/Potvin/Moves/PickupDelivery/PDRearrange/PotvinPDRearrangeMultiMoveGenerator.cs

@@ -64 +64 @@
 
       for (int i = 0; i < SampleSizeParameter.ActualValue.Value; i++) {
-        result.Add(PotvinPDRearrangeSingleMoveGenerator.Apply(individual, ProblemInstance, RandomParameter.ActualValue));
+        var move = PotvinPDRearrangeSingleMoveGenerator.Apply(individual, ProblemInstance, RandomParameter.ActualValue);
+        if (move != null)
+          result.Add(move);
       }
 

branches/VRP/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/Potvin/Moves/PickupDelivery/PDRearrange/PotvinPDRearrangeSingleMoveGenerator.cs

@@ -62 +62 @@
       IPickupAndDeliveryProblemInstance pdp = problemInstance as IPickupAndDeliveryProblemInstance;
       for (int i = 1; i <= individual.Cities; i++) {
-        if(pdp == null || pdp.GetDemand(i) >= 0)
+        if (pdp == null || pdp.GetDemand(i) >= 0)
           cities.Add(i);
       }
 
-      int city = cities[rand.Next(cities.Count)];
-      int tour = individual.Tours.FindIndex(t => t.Stops.Contains(city));
-      return new PotvinPDRearrangeMove(city, tour, individual);
+      if (cities.Count > 0) {
+        int city = cities[rand.Next(cities.Count)];
+        int tour = individual.Tours.FindIndex(t => t.Stops.Contains(city));
+        return new PotvinPDRearrangeMove(city, tour, individual);
+      } else {
+        return null;
+      }
     }