Changeset 6449 for trunk/sources/HeuristicLab.Problems.VehicleRouting/3.3/Encodings/Potvin/Crossovers

Timestamp:

06/20/11 13:36:49 (13 years ago)

Author:

svonolfe

Message:

Improved performance of many VRP operators by optimizing the parameter lookup (#1561)

Location:

trunk/sources/HeuristicLab.Problems.VehicleRouting/3.3/Encodings/Potvin/Crossovers

Files:

• PotvinCrossover.cs (modified) (5 diffs)
• PotvinRouteBasedCrossover.cs (modified) (4 diffs)
• PotvinSequenceBasedCrossover.cs (modified) (3 diffs)

trunk/sources/HeuristicLab.Problems.VehicleRouting/3.3/Encodings/Potvin/Crossovers/PotvinCrossover.cs

@@ -26 +26 @@
 using HeuristicLab.Parameters;
 using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
+using HeuristicLab.Data;
 
 namespace HeuristicLab.Problems.VehicleRouting.Encodings.Potvin {
@@ -47 +48 @@
     protected abstract PotvinEncoding Crossover(IRandom random, PotvinEncoding parent1, PotvinEncoding parent2);
 
-    protected bool FindInsertionPlace(PotvinEncoding individual, int city, out int route, out int place) {
+    protected static bool FindInsertionPlace(PotvinEncoding individual, int city, 
+      DoubleArray dueTime, DoubleArray serviceTime, DoubleArray readyTime, DoubleArray demand,
+      DoubleValue capacity, DistanceMatrix distMatrix, 
+      out int route, out int place) {
       return individual.FindInsertionPlace(
-        DueTimeParameter.ActualValue, ServiceTimeParameter.ActualValue, ReadyTimeParameter.ActualValue,
-        DemandParameter.ActualValue, CapacityParameter.ActualValue, CoordinatesParameter.ActualValue,
-        DistanceMatrixParameter, UseDistanceMatrixParameter.ActualValue,
+        dueTime, serviceTime, readyTime,
+        demand, capacity, distMatrix,
         city, -1, out route, out place);
     }
@@ -68 +71 @@
     }
 
-    protected bool Repair(IRandom random, PotvinEncoding solution, Tour newTour) {
+    protected static bool RouteUnrouted(PotvinEncoding solution, DistanceMatrix distMatrix,
+      DoubleArray dueTime, DoubleArray readyTime, DoubleArray serviceTime, DoubleArray demand, DoubleValue capacity) {
+      bool success = true;
+      int index = 0;
+      while (index < solution.Unrouted.Count && success) {
+        int unrouted = solution.Unrouted[index];
+
+        int route, place;
+        if (FindInsertionPlace(solution, unrouted,
+          dueTime, serviceTime, readyTime, demand, capacity,
+          distMatrix,
+          out route, out place)) {
+          solution.Tours[route].Cities.Insert(place, unrouted);
+        } else {
+          success = false;
+        }
+
+        index++;
+      }
+
+      for (int i = 0; i < index; i++)
+        solution.Unrouted.RemoveAt(0);
+
+      return success;
+    }
+
+    protected static bool Repair(IRandom random, PotvinEncoding solution, Tour newTour, DistanceMatrix distmatrix,
+      DoubleArray dueTime, DoubleArray readyTime, DoubleArray serviceTime, DoubleArray demand, DoubleValue capacity) {
       bool success = true;
 
@@ -84 +114 @@
       while (newTour.Cities.Contains(0))
         newTour.Cities.Remove(0);
+
+      if (!newTour.Feasible(
+        dueTime, serviceTime, readyTime, demand, capacity, distmatrix))
+              return false; 
 
       //remove duplicates from old tours
@@ -105 +139 @@
 
       //route unrouted vehicles
-      int index = 0;
-      while (index < solution.Unrouted.Count && success) {
-        int unrouted = solution.Unrouted[index];
-
-        int route, place;
-        if (FindInsertionPlace(solution, unrouted, out route, out place)) {
-          solution.Tours[route].Cities.Insert(place, unrouted);
-        } else {
-          success = false;
-        }
-
-        index++;
-      }
-
-      for (int i = 0; i < index; i++)
-        solution.Unrouted.RemoveAt(0);
+      success = RouteUnrouted(solution, distmatrix, dueTime, readyTime, serviceTime, demand, capacity);
 
       return success;

trunk/sources/HeuristicLab.Problems.VehicleRouting/3.3/Encodings/Potvin/Crossovers/PotvinRouteBasedCrossover.cs

@@ -23 +23 @@
 using HeuristicLab.Core;
 using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
+using HeuristicLab.Data;
 
 namespace HeuristicLab.Problems.VehicleRouting.Encodings.Potvin {
@@ -40 +41 @@
 
     protected override PotvinEncoding Crossover(IRandom random, PotvinEncoding parent1, PotvinEncoding parent2) {
+      BoolValue useDistanceMatrix = UseDistanceMatrixParameter.ActualValue;
+      DoubleMatrix coordinates = CoordinatesParameter.ActualValue;
+      DistanceMatrix distMatrix = VRPUtilities.GetDistanceMatrix(coordinates, DistanceMatrixParameter, useDistanceMatrix);
+      DoubleArray dueTime = DueTimeParameter.ActualValue;
+      DoubleArray readyTime = ReadyTimeParameter.ActualValue;
+      DoubleArray serviceTime = ServiceTimeParameter.ActualValue;
+      DoubleArray demand = DemandParameter.ActualValue;
+      DoubleValue capacity = CapacityParameter.ActualValue;
+
       PotvinEncoding child = parent2.Clone() as PotvinEncoding;
 
@@ -55 +65 @@
           child.Unrouted.Add(city);
 
-      if (Repair(random, child, replacing))
+      if (Repair(random, child, replacing, distMatrix, dueTime, readyTime, serviceTime, demand, capacity))
         return child;
       else {
@@ -61 +71 @@
           return parent1.Clone() as PotvinEncoding;
         else
-          return parent2.Clone() as PotvinEncoding;
+          return parent2.Clone() as PotvinEncoding;   
       }
     }

trunk/sources/HeuristicLab.Problems.VehicleRouting/3.3/Encodings/Potvin/Crossovers/PotvinSequenceBasedCrossover.cs

@@ -23 +23 @@
 using HeuristicLab.Core;
 using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
+using HeuristicLab.Data;
 
 namespace HeuristicLab.Problems.VehicleRouting.Encodings.Potvin {
@@ -41 +42 @@
 
     protected override PotvinEncoding Crossover(IRandom random, PotvinEncoding parent1, PotvinEncoding parent2) {
+      BoolValue useDistanceMatrix = UseDistanceMatrixParameter.ActualValue;
+      DoubleMatrix coordinates = CoordinatesParameter.ActualValue;
+      DistanceMatrix distMatrix = VRPUtilities.GetDistanceMatrix(coordinates, DistanceMatrixParameter, useDistanceMatrix);
+      DoubleArray dueTime = DueTimeParameter.ActualValue;
+      DoubleArray readyTime = ReadyTimeParameter.ActualValue;
+      DoubleArray serviceTime = ServiceTimeParameter.ActualValue;
+      DoubleArray demand = DemandParameter.ActualValue;
+      DoubleValue capacity = CapacityParameter.ActualValue;
+
       PotvinEncoding child = parent1.Clone() as PotvinEncoding;
       Tour newTour = new Tour();
@@ -69 +79 @@
           child.Unrouted.Add(city);
 
-      if (Feasible(newTour) &&
-          Repair(random, child, newTour)) {
+      if (Repair(random, child, newTour, distMatrix, dueTime, readyTime, serviceTime, demand, capacity)) {
         return child;
       } else {
-        if (random.NextDouble() < 0.5)
+         if (random.NextDouble() < 0.5)
           return parent1.Clone() as PotvinEncoding;
         else
-          return parent2.Clone() as PotvinEncoding;
+          return parent2.Clone() as PotvinEncoding;   
       }
     }