Changeset 10743 for stable/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/General/Crossovers/BiasedMultiVRPSolutionCrossover.cs

Timestamp:

04/11/14 15:05:55 (11 years ago)

Author:

abeham

Message:

#2146: merged r10407,r10465,r10466,r10474,r10503,r10504,r10646 into stable

Location:

stable

Files:

• . (modified) (1 prop)
• HeuristicLab.Problems.VehicleRouting (modified) (1 prop)
• HeuristicLab.Problems.VehicleRouting/3.4/Encodings/General/Crossovers/BiasedMultiVRPSolutionCrossover.cs (modified) (2 diffs)

stable/HeuristicLab.Problems.VehicleRouting/3.4/Encodings/General/Crossovers/BiasedMultiVRPSolutionCrossover.cs

@@ -30 +30 @@
 using HeuristicLab.Parameters;
 using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
+using HeuristicLab.Random;
 
 namespace HeuristicLab.Problems.VehicleRouting.Encodings.General {
@@ -140 +141 @@
       if (checkedOperators.Count() > 0) {
         // select a random operator from the checked operators
-        double sum = (from indexedItem in checkedOperators select probabilities[indexedItem.Index]).Sum();
-        if (sum == 0) throw new InvalidOperationException(Name + ": All selected operators have zero probability.");
-        double r = random.NextDouble() * sum;
-        sum = 0;
-        foreach (var indexedItem in checkedOperators) {
-          sum += probabilities[indexedItem.Index];
-          if (sum > r) {
-            successor = indexedItem.Value;
-            break;
-          }
-        }
+        successor = checkedOperators.SampleProportional(random, 1, probabilities, false, false).First().Value;
       }