Changeset 3340 for trunk/sources/HeuristicLab.Encodings.BinaryVectorEncoding/3.3/Moves/OneBitflipMove/OneBitflipMoveTabuChecker.cs

Timestamp:

04/14/10 03:52:07 (15 years ago)

Author:

abeham

Message:

Updated Tabu search, permutation move operators, real vector move operators, binary vector move operators #840
Added a Tabu Search TSP workbench

File:

• trunk/sources/HeuristicLab.Encodings.BinaryVectorEncoding/3.3/Moves/OneBitflipMove/OneBitflipMoveTabuChecker.cs (moved) (moved from trunk/sources/HeuristicLab.Encodings.BinaryVectorEncoding/3.3/Moves/OneBitflipMove/PreventOneBitflipTabuMoveEvaluator.cs) (4 diffs)

trunk/sources/HeuristicLab.Encodings.BinaryVectorEncoding/3.3/Moves/OneBitflipMove/OneBitflipMoveTabuChecker.cs

@@ -29 +29 @@
 
 namespace HeuristicLab.Encodings.BinaryVectorEncoding {
-  [Item("PreventOneBitflipTabuMoveEvaluator", "Prevents peforming a one bitflip move again.")]
+  [Item("OneBitflipMoveTabuChecker", "Prevents peforming a one bitflip move again.")]
   [StorableClass]
-  public class PreventOneBitflipTabuMoveEvaluator : SingleSuccessorOperator, IOneBitflipMoveOperator, ITabuChecker {
+  public class OneBitflipMoveTabuChecker : SingleSuccessorOperator, IOneBitflipMoveOperator, ITabuChecker {
     public ILookupParameter<OneBitflipMove> OneBitflipMoveParameter {
       get { return (LookupParameter<OneBitflipMove>)Parameters["OneBitflipMove"]; }
@@ -44 +44 @@
       get { return (ILookupParameter<BoolValue>)Parameters["MoveTabu"]; }
     }
-    private ScopeParameter CurrentScopeParameter {
-      get { return (ScopeParameter)Parameters["CurrentScope"]; }
+    public IValueLookupParameter<BoolValue> MaximizationParameter {
+      get { return (IValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
+    }
+    public ILookupParameter<DoubleValue> MoveQualityParameter {
+      get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
+    }
+    public ValueParameter<BoolValue> UseAspirationCriterionParameter {
+      get { return (ValueParameter<BoolValue>)Parameters["UseAspirationCriterion"]; }
     }
 
-    public PreventOneBitflipTabuMoveEvaluator()
+    public BoolValue UseAspirationCriterion {
+      get { return UseAspirationCriterionParameter.Value; }
+      set { UseAspirationCriterionParameter.Value = value; }
+    }
+
+    public OneBitflipMoveTabuChecker()
       : base() {
       Parameters.Add(new LookupParameter<OneBitflipMove>("OneBitflipMove", "The move to evaluate."));
@@ -54 +65 @@
       Parameters.Add(new LookupParameter<BinaryVector>("BinaryVector", "The solution as permutation."));
       Parameters.Add(new LookupParameter<ItemList<IItem>>("TabuList", "The tabu list."));
-      Parameters.Add(new ScopeParameter("CurrentScope", "The current scope."));
+      Parameters.Add(new ValueParameter<BoolValue>("UseAspirationCriterion", "Whether to use the aspiration criterion or not.", new BoolValue(true)));
+      Parameters.Add(new ValueLookupParameter<BoolValue>("Maximization", "True if the problem is a maximization problem, else if it is a minimization problem."));
+      Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The quality of the current move."));
     }
 
@@ -60 +73 @@
       ItemList<IItem> tabuList = TabuListParameter.ActualValue;
       OneBitflipMove move = OneBitflipMoveParameter.ActualValue;
+      double moveQuality = MoveQualityParameter.ActualValue.Value;
+      bool maximization = MaximizationParameter.ActualValue.Value;
+      bool useAspiration = UseAspirationCriterion.Value;
       bool isTabu = false;
       foreach (IItem tabuMove in tabuList) {
-        OneBitflipMove attribute = (tabuMove as OneBitflipMove);
+        OneBitflipMoveAttribute attribute = (tabuMove as OneBitflipMoveAttribute);
         if (attribute != null) {
-          if (attribute.Index == move.Index) {
-            isTabu = true;
-            break;
+          if (!useAspiration
+            || maximization && moveQuality <= attribute.MoveQuality
+            || !maximization && moveQuality >= attribute.MoveQuality) {
+            if (attribute.Index == move.Index) {
+              isTabu = true;
+              break;
+            }
           }
         }