Changeset 5925 for trunk/sources/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.4/Manipulators

Timestamp:

04/01/11 13:45:24 (14 years ago)

Author:

gkronber

Message:

#1418 fixed bugs in symbolic expression tree operators.

Location:

trunk/sources/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.4/Manipulators

Files:

• ChangeNodeTypeManipulation.cs (modified) (1 diff)
• ReplaceBranchManipulation.cs (modified) (1 diff)

trunk/sources/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.4/Manipulators/ChangeNodeTypeManipulation.cs

@@ -53 +53 @@
                                                       // do not replace the existing symbol with itself
                                                       where symbol.Name != subtree.Symbol.Name
+                                                      where symbol.InitialFrequency > 0
                                                       where existingSubtreeCount <= parent.Grammar.GetMaximumSubtreeCount(symbol)
                                                       where existingSubtreeCount >= parent.Grammar.GetMinimumSubtreeCount(symbol)

trunk/sources/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.4/Manipulators/ReplaceBranchManipulation.cs

@@ -78 +78 @@
                                                       // do not replace symbol with the same symbol
                                                       where symbol.Name != subtree.Symbol.Name
+                                                      where symbol.InitialFrequency > 0
                                                       where parent.Grammar.GetMinimumExpressionDepth(symbol) <= maxDepth
                                                       where parent.Grammar.GetMinimumExpressionLength(symbol) <= maxLength