Changeset 8019 for trunk/sources/HeuristicLab.Encodings.IntegerVectorEncoding/3.3/Crossovers

Timestamp:

06/17/12 15:05:11 (13 years ago)

Author:

abeham

Message:

#1775: reintegrated branch

Location:

trunk/sources/HeuristicLab.Encodings.IntegerVectorEncoding

Files:

• . (modified) (1 prop)
• 3.3/Crossovers/DiscreteCrossover.cs (modified) (1 diff)
• 3.3/Crossovers/MultiIntegerVectorCrossover.cs (modified) (5 diffs)
• 3.3/Crossovers/RoundedAverageCrossover.cs (copied) (copied from branches/IntegerVectorEncoding/HeuristicLab.Encodings.IntegerVectorEncoding/3.3/Crossovers/RoundedAverageCrossover.cs)
• 3.3/Crossovers/RoundedBlendAlphaBetaCrossover.cs (copied) (copied from branches/IntegerVectorEncoding/HeuristicLab.Encodings.IntegerVectorEncoding/3.3/Crossovers/RoundedBlendAlphaBetaCrossover.cs)
• 3.3/Crossovers/RoundedBlendAlphaCrossover.cs (copied) (copied from branches/IntegerVectorEncoding/HeuristicLab.Encodings.IntegerVectorEncoding/3.3/Crossovers/RoundedBlendAlphaCrossover.cs)
• 3.3/Crossovers/RoundedHeuristicCrossover.cs (copied) (copied from branches/IntegerVectorEncoding/HeuristicLab.Encodings.IntegerVectorEncoding/3.3/Crossovers/RoundedHeuristicCrossover.cs)
• 3.3/Crossovers/RoundedLocalCrossover.cs (copied) (copied from branches/IntegerVectorEncoding/HeuristicLab.Encodings.IntegerVectorEncoding/3.3/Crossovers/RoundedLocalCrossover.cs)
• 3.3/Crossovers/RoundedUniformArithmeticCrossover.cs (copied) (copied from branches/IntegerVectorEncoding/HeuristicLab.Encodings.IntegerVectorEncoding/3.3/Crossovers/RoundedUniformArithmeticCrossover.cs)
• 3.3/Crossovers/SinglePointCrossover.cs (modified) (1 diff)

trunk/sources/HeuristicLab.Encodings.IntegerVectorEncoding/3.3/Crossovers/DiscreteCrossover.cs

@@ -45 +45 @@
 
     /// <summary>
-    /// Performs a discrete crossover operation of the two given parents.
+    /// Performs a discrete crossover operation of any number of given parents.
     /// </summary>
     /// <exception cref="ArgumentException">Thrown when the vectors of the parents are of different length.</exception>
     /// <param name="random">A random number generator.</param>
-    /// <param name="parent1">The first parent for the crossover operation.</param>
-    /// <param name="parent2">The second parent for the crossover operation.</param>
+    /// <param name="parents">The list of parents for the crossover operation.</param>
     /// <returns>The newly created integer vector, resulting from the crossover operation.</returns>
-    public static IntegerVector Apply(IRandom random, IntegerVector parent1, IntegerVector parent2) {
-      if (parent1.Length != parent2.Length)
-        throw new ArgumentException("DiscreteCrossover: The parents are of different length.");
+    public static IntegerVector Apply(IRandom random, ItemArray<IntegerVector> parents) {
+      int length = parents[0].Length;
 
-      int length = parent1.Length;
-      int[] result = new int[length];
+      for (int i = 0; i < parents.Length; i++) {
+        if (parents[i].Length != length)
+          throw new ArgumentException("DiscreteCrossover: The parents' vectors are of different length.", "parents");
+      }
 
+      var result = new IntegerVector(length);
       for (int i = 0; i < length; i++) {
-        if (random.NextDouble() < 0.5)
-          result[i] = parent1[i];
-        else
-          result[i] = parent2[i];
+        result[i] = parents[random.Next(parents.Length)][i];
       }
-      return new IntegerVector(result);
+
+      return result;
     }
 
     /// <summary>
-    /// Performs a discrete crossover operation for two given parent integer vectors.
+    /// Performs a discrete crossover operation for any number of given parent integer vectors.
     /// </summary>
-    /// <exception cref="ArgumentException">Thrown if there are not exactly two parents.</exception>
     /// <param name="random">A random number generator.</param>
-    /// <param name="parents">An array containing the two integer vectors that should be crossed.</param>
+    /// <param name="parents">An array containing integer vectors that should be crossed.</param>
     /// <returns>The newly created integer vector, resulting from the crossover operation.</returns>
     protected override IntegerVector Cross(IRandom random, ItemArray<IntegerVector> parents) {
-      if (parents.Length != 2) throw new ArgumentException("ERROR in DiscreteCrossover: The number of parents is not equal to 2");
-      return Apply(random, parents[0], parents[1]);
+      return Apply(random, parents);
     }
   }

trunk/sources/HeuristicLab.Encodings.IntegerVectorEncoding/3.3/Crossovers/MultiIntegerVectorCrossover.cs

@@ -25 +25 @@
 using HeuristicLab.Common;
 using HeuristicLab.Core;
+using HeuristicLab.Data;
 using HeuristicLab.Operators;
 using HeuristicLab.Optimization;
@@ -34 +35 @@
   [Item("MultiIntegerVectorCrossover", "Randomly selects and applies one of its crossovers every time it is called.")]
   [StorableClass]
-  public class MultiIntegerVectorCrossover : StochasticMultiBranch<IIntegerVectorCrossover>, IIntegerVectorCrossover, IStochasticOperator {
+  public class MultiIntegerVectorCrossover : StochasticMultiBranch<IIntegerVectorCrossover>, IIntegerVectorCrossover, IStochasticOperator, IBoundedIntegerVectorOperator {
     public override bool CanChangeName {
       get { return false; }
@@ -40 +41 @@
     protected override bool CreateChildOperation {
       get { return true; }
+    }
+
+    public IValueLookupParameter<IntMatrix> BoundsParameter {
+      get { return (IValueLookupParameter<IntMatrix>)Parameters["Bounds"]; }
     }
 
@@ -55 +60 @@
     public MultiIntegerVectorCrossover()
       : base() {
+      Parameters.Add(new ValueLookupParameter<IntMatrix>("Bounds", "The bounds matrix can contain one row for each dimension with three columns specifying minimum (inclusive), maximum (exclusive), and step size. If less rows are given the matrix is cycled."));
       Parameters.Add(new ScopeTreeLookupParameter<IntegerVector>("Parents", "The parent integer vector which should be crossed."));
       ParentsParameter.ActualName = "IntegerVector";
@@ -88 +94 @@
         crossover.RandomParameter.ActualName = RandomParameter.Name;
       }
+      foreach (IBoundedIntegerVectorOperator crossover in Operators.OfType<IBoundedIntegerVectorOperator>()) {
+        crossover.BoundsParameter.ActualName = BoundsParameter.Name;
+      }
     }
 

trunk/sources/HeuristicLab.Encodings.IntegerVectorEncoding/3.3/Crossovers/SinglePointCrossover.cs

@@ -54 +54 @@
     public static IntegerVector Apply(IRandom random, IntegerVector parent1, IntegerVector parent2) {
       if (parent1.Length != parent2.Length)
-        throw new ArgumentException("DiscreteCrossover: The parents are of different length.");
+        throw new ArgumentException("SinglePointCrossover: The parents are of different length.");
 
       int length = parent1.Length;