Index: trunk/sources/HeuristicLab.Algorithms.GeneticAlgorithm/3.3/IslandGeneticAlgorithm.cs
===================================================================
--- trunk/sources/HeuristicLab.Algorithms.GeneticAlgorithm/3.3/IslandGeneticAlgorithm.cs	(revision 9555)
+++ trunk/sources/HeuristicLab.Algorithms.GeneticAlgorithm/3.3/IslandGeneticAlgorithm.cs	(revision 9569)
@@ -100,4 +100,7 @@
       get { return (ValueParameter<IntValue>)Parameters["Elites"]; }
     }
+    private IFixedValueParameter<BoolValue> ReevaluateElitesParameter {
+      get { return (IFixedValueParameter<BoolValue>)Parameters["ReevaluateElites"]; }
+    }
     private ValueParameter<MultiAnalyzer> AnalyzerParameter {
       get { return (ValueParameter<MultiAnalyzer>)Parameters["Analyzer"]; }
@@ -168,4 +171,8 @@
       get { return ElitesParameter.Value; }
       set { ElitesParameter.Value = value; }
+    }
+    public bool ReevaluteElites {
+      get { return ReevaluateElitesParameter.Value.Value; }
+      set { ReevaluateElitesParameter.Value.Value = value; }
     }
     public MultiAnalyzer Analyzer {
@@ -199,4 +206,7 @@
     [StorableHook(HookType.AfterDeserialization)]
     private void AfterDeserialization() {
+      if (!Parameters.ContainsKey("ReevaluateElites")) {
+        Parameters.Add(new FixedValueParameter<BoolValue>("ReevaluateElites", "Flag to determine if elite individuals should be reevaluated (i.e., if stochastic fitness functions are used.)", (BoolValue)new BoolValue(false).AsReadOnly()) { Hidden = true });
+      }
       Initialize();
     }
@@ -228,4 +238,5 @@
       Parameters.Add(new OptionalConstrainedValueParameter<IManipulator>("Mutator", "The operator used to mutate solutions."));
       Parameters.Add(new ValueParameter<IntValue>("Elites", "The numer of elite solutions which are kept in each generation.", new IntValue(1)));
+      Parameters.Add(new FixedValueParameter<BoolValue>("ReevaluateElites", "Flag to determine if elite individuals should be reevaluated (i.e., if stochastic fitness functions are used.)", new BoolValue(false)) { Hidden = true });
       Parameters.Add(new ValueParameter<MultiAnalyzer>("Analyzer", "The operator used to analyze the islands.", new MultiAnalyzer()));
       Parameters.Add(new ValueParameter<MultiAnalyzer>("IslandAnalyzer", "The operator used to analyze each island.", new MultiAnalyzer()));
@@ -301,4 +312,5 @@
       mainLoop.CrossoverParameter.ActualName = CrossoverParameter.Name;
       mainLoop.ElitesParameter.ActualName = ElitesParameter.Name;
+      mainLoop.ReevaluateElitesParameter.ActualName = ReevaluateElitesParameter.Name;
       mainLoop.MutatorParameter.ActualName = MutatorParameter.Name;
       mainLoop.MutationProbabilityParameter.ActualName = MutationProbabilityParameter.Name;
Index: trunk/sources/HeuristicLab.Algorithms.GeneticAlgorithm/3.3/IslandGeneticAlgorithmMainLoop.cs
===================================================================
--- trunk/sources/HeuristicLab.Algorithms.GeneticAlgorithm/3.3/IslandGeneticAlgorithmMainLoop.cs	(revision 9555)
+++ trunk/sources/HeuristicLab.Algorithms.GeneticAlgorithm/3.3/IslandGeneticAlgorithmMainLoop.cs	(revision 9569)
@@ -91,4 +91,7 @@
     public ValueLookupParameter<IntValue> ElitesParameter {
       get { return (ValueLookupParameter<IntValue>)Parameters["Elites"]; }
+    }
+    public IValueLookupParameter<BoolValue> ReevaluateElitesParameter {
+      get { return (IValueLookupParameter<BoolValue>)Parameters["ReevaluateElites"]; }
     }
     public ValueLookupParameter<ResultCollection> ResultsParameter {
@@ -144,4 +147,5 @@
       Parameters.Add(new ValueLookupParameter<IOperator>("Evaluator", "The operator used to evaluate solutions."));
       Parameters.Add(new ValueLookupParameter<IntValue>("Elites", "The numer of elite solutions which are kept in each generation."));
+      Parameters.Add(new ValueLookupParameter<BoolValue>("ReevaluateElites", "Flag to determine if elite individuals should be reevaluated (i.e., if stochastic fitness functions are used.)"));
       Parameters.Add(new ValueLookupParameter<ResultCollection>("Results", "The results collection to store the results."));
       Parameters.Add(new ValueLookupParameter<IOperator>("Analyzer", "The operator used to the analyze the islands."));
@@ -194,4 +198,5 @@
       Placeholder analyzer2 = new Placeholder();
       ConditionalBranch generationsTerminationCondition = new ConditionalBranch();
+      ConditionalBranch reevaluateElitesBranch = new ConditionalBranch();
 
 
@@ -305,4 +310,7 @@
       generationsTerminationCondition.Name = "Terminate?";
       generationsTerminationCondition.ConditionParameter.ActualName = "TerminateGenerations";
+
+      reevaluateElitesBranch.ConditionParameter.ActualName = "ReevaluateElites";
+      reevaluateElitesBranch.Name = "Reevaluate elites ?";
       #endregion
 
@@ -345,5 +353,4 @@
       evaluator.Successor = null;
       subScopesCounter.Successor = null;
-      subScopesCounter.Successor = null;
       subScopesProcessor2.Operators.Add(bestSelector);
       subScopesProcessor2.Operators.Add(new EmptyOperator());
@@ -351,5 +358,8 @@
       mergingReducer.Successor = islandAnalyzer2;
       bestSelector.Successor = rightReducer;
-      rightReducer.Successor = null;
+      rightReducer.Successor = reevaluateElitesBranch;
+      reevaluateElitesBranch.TrueBranch = uniformSubScopesProcessor3;
+      reevaluateElitesBranch.FalseBranch = null;
+      reevaluateElitesBranch.Successor = null;
       islandAnalyzer2.Successor = islandGenerationsCounter;
       islandGenerationsCounter.Successor = checkIslandGenerationsReachedMaximum;
@@ -369,4 +379,11 @@
     }
 
+    [StorableHook(HookType.AfterDeserialization)]
+    private void AfterDeserialization() {
+      if (!Parameters.ContainsKey("ReevaluateElites")) {
+        Parameters.Add(new ValueLookupParameter<BoolValue>("ReevaluateElites", "Flag to determine if elite individuals should be reevaluated (i.e., if stochastic fitness functions are used.)"));
+      }
+    }
+
     public override IOperation Apply() {
       if (CrossoverParameter.ActualValue == null)
