Changeset 3269 for trunk/sources/HeuristicLab.Problems.DataAnalysis.Regression/3.3/Symbolic/Symbols/ConstantTreeNode.cs

Timestamp:

04/05/10 18:52:23 (14 years ago)

Author:

gkronber

Message:

Implemented initialization of Variable and Constant terminal nodes. #938 (Data types and operators for regression problems)

File:

• trunk/sources/HeuristicLab.Problems.DataAnalysis.Regression/3.3/Symbolic/Symbols/ConstantTreeNode.cs (modified) (3 diffs)

trunk/sources/HeuristicLab.Problems.DataAnalysis.Regression/3.3/Symbolic/Symbols/ConstantTreeNode.cs

@@ -24 +24 @@
 using System.Collections.Generic;
 using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
+using HeuristicLab.Core;
+using HeuristicLab.Data;
+using HeuristicLab.Random;
 namespace HeuristicLab.Problems.DataAnalysis.Regression.Symbolic.Symbols {
   [StorableClass]
   public sealed class ConstantTreeNode : SymbolicExpressionTreeTerminalNode {
+    public new Constant Symbol {
+      get { return (Constant)base.Symbol; }
+    }
     public override bool HasLocalParameters {
       get {
@@ -39 +45 @@
       set { constantValue = value; }
     }
-
     // copy constructor
     private ConstantTreeNode(ConstantTreeNode original)
@@ -48 +53 @@
     public ConstantTreeNode(Constant constantSymbol) : base(constantSymbol) { }
 
+    public override void ResetLocalParameters(IRandom random) {
+      base.ResetLocalParameters(random);
+      var range = Symbol.MaxValue.Value - Symbol.MaxValue.Value;
+      Value = random.NextDouble() * range - Symbol.MinValue.Value;
+    }
+
     public override object Clone() {
       return new ConstantTreeNode(this);