Changeset 2805 for trunk/sources/HeuristicLab.Selection/3.3/RandomSelector.cs

Timestamp:

02/16/10 06:50:14 (15 years ago)

Author:

swagner

Message:

Operator architecture refactoring (#95)

• worked on parameters, TSP and selection

File:

• trunk/sources/HeuristicLab.Selection/3.3/RandomSelector.cs (modified) (2 diffs)

trunk/sources/HeuristicLab.Selection/3.3/RandomSelector.cs

@@ -1 +1 @@
 #region License Information
 /* HeuristicLab
- * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
+ * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
  *
  * This file is part of HeuristicLab.
@@ -20 +20 @@
 #endregion
 
-using System;
 using System.Collections.Generic;
-using System.Text;
 using HeuristicLab.Core;
+using HeuristicLab.Data;
+using HeuristicLab.Parameters;
+using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
 
 namespace HeuristicLab.Selection {
   /// <summary>
-  /// Copies or moves a defined number of sub scopes from a source scope to a target scope, being selected
-  /// randomly.
+  /// A random selection operator.
   /// </summary>
-  public class RandomSelector : StochasticSelectorBase {
-    /// <inheritdoc select="summary"/>
-    public override string Description {
-      get { return @"TODO\r\nOperator description still missing ..."; }
-    }
+  [Item("RandomSelector", "A random selection operator.")]
+  [EmptyStorableClass]
+  [Creatable("Test")]
+  public sealed class RandomSelector : StochasticSelector {
+    public RandomSelector() : base() { }
 
-    /// <summary>
-    /// Copies or moves a number of sub scopes (<paramref name="selected"/>) from <paramref name="source"/>
-    /// to the <paramref name="target"/>, chosen randomly.
-    /// </summary>
-    /// <param name="random">The random number generator.</param>
-    /// <param name="source">The source scope from which to copy/move the sub scopes.</param>
-    /// <param name="selected">The number of sub scopes to move.</param>
-    /// <param name="target">The target where to copy/move the sub scopes.</param>
-    /// <param name="copySelected">Boolean flag whether the sub scopes shall be copied or moved.</param>
-    protected override void Select(IRandom random, IScope source, int selected, IScope target, bool copySelected) {
-      for (int i = 0; i < selected; i++) {
-        if (copySelected) {
-          target.AddSubScope((IScope)source.SubScopes[random.Next(source.SubScopes.Count)].Clone());
-        } else {
-          IScope s = source.SubScopes[random.Next(source.SubScopes.Count)];
-          source.RemoveSubScope(s);
-          target.AddSubScope(s);
+    protected override void Select(ScopeList source, ScopeList target) {
+      int count = NumberOfSelectedSubScopesParameter.ActualValue.Value;
+      bool copy = CopySelectedParameter.Value.Value;
+      IRandom random = RandomParameter.ActualValue;
+
+      for (int i = 0; i < count; i++) {
+        if (copy)
+          target.Add((IScope)source[random.Next(source.Count)].Clone());
+        else {
+          int index = random.Next(source.Count);
+          target.Add(source[index]);
+          source.RemoveAt(index);
         }
       }