Changeset 5411 for trunk/sources/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.3/ArchitectureManipulators

Timestamp:

02/03/11 13:47:16 (13 years ago)

Author:

gkronber

Message:

Improved test cases for symbolic expression tree encoding and fixed minor bugs. #1336

File:

• trunk/sources/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.3/ArchitectureManipulators/SubroutineDeleter.cs (modified) (2 diffs)

trunk/sources/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.3/ArchitectureManipulators/SubroutineDeleter.cs

@@ -28 +28 @@
 using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.Symbols;
 using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
+using System.Collections.Generic;
 
 namespace HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.ArchitectureManipulators {
@@ -97 +98 @@
         // deletion by random regeneration
         SymbolicExpressionTreeNode replacementTree = null;
-        // TODO: should weight symbols by tickets
-        var selectedSymbol = invocationCutPoint.Parent.GetAllowedSymbols(invocationCutPoint.ReplacedChildIndex).SelectRandom(random);
+        var allowedSymbolsList = invocationCutPoint.Parent.GetAllowedSymbols(invocationCutPoint.ReplacedChildIndex).ToList();
+        var weights = allowedSymbolsList.Select(s => s.InitialFrequency);
+        var selectedSymbol = allowedSymbolsList.SelectRandom(weights, random);
 
         int minPossibleSize = invocationCutPoint.Parent.Grammar.GetMinExpressionLength(selectedSymbol);