Changeset 13013 for branches/Robocode.TrunkInt/HeuristicLab.Problems.Robocode/3.3/Symbols/Logical Expressions/BooleanTreeNode.cs

Timestamp:

10/15/15 16:39:12 (9 years ago)

Author:

gkronber

Message:

#2069: reviewing and minor changes

File:

• branches/Robocode.TrunkInt/HeuristicLab.Problems.Robocode/3.3/Symbols/Logical Expressions/BooleanTreeNode.cs (modified) (2 diffs)

branches/Robocode.TrunkInt/HeuristicLab.Problems.Robocode/3.3/Symbols/Logical Expressions/BooleanTreeNode.cs

@@ -25 +25 @@
 using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
 
-namespace HeuristicLab.Problems.GeneticProgramming.RoboCode {
+namespace HeuristicLab.Problems.GeneticProgramming.Robocode {
   [StorableClass]
   public class BooleanTreeNode : SymbolicExpressionTreeTerminalNode {
@@ -53 +53 @@
 
     public override void ResetLocalParameters(IRandom random) {
-      value = random.Next(0, 2) == 1;
+      // initialization
+      value = random.NextDouble() > 0.5;
+    }
+
+    public override void ShakeLocalParameters(IRandom random, double shakingFactor) {
+      // mutation: flip value with 5% probability
+      if (random.NextDouble() < 0.05) value = !value;
     }
   }