Changeset 12844 for trunk/sources/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.4/Creators

Timestamp:

08/11/15 13:54:46 (9 years ago)

Author:

mkommend

Message:

#2458: Adapted tree creators to work with the same depth restriction as the PTC2 (excluding the root symbol).

Location:

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

Files:

• FullTreeCreator.cs (modified) (3 diffs)
• GrowTreeCreator.cs (modified) (1 diff)

trunk/sources/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.4/Creators/FullTreeCreator.cs

@@ -77 +77 @@
       rootNode.AddSubtree(startNode);
 
-      Create(random, startNode, maxTreeDepth - 2);
+      Create(random, startNode, maxTreeDepth-1);
       tree.Root = rootNode;
       return tree;
@@ -99 +99 @@
       for (var i = 0; i < arity; i++) {
         var possibleSymbols = allowedSymbols
-          .Where(s => seedNode.Grammar.IsAllowedChildSymbol(seedNode.Symbol, s, i))
+          .Where(s => seedNode.Grammar.IsAllowedChildSymbol(seedNode.Symbol, s, i)
+                   && seedNode.Grammar.GetMinimumExpressionDepth(s) <= maxDepth
+                   && seedNode.Grammar.GetMaximumExpressionDepth(s) >= maxDepth)
           .ToList();
         var weights = possibleSymbols.Select(s => s.InitialFrequency).ToList();
@@ -142 +144 @@
         var selectedSymbol = possibleSymbols.SelectRandom(weights, random);
 #pragma warning restore 612, 618
-        
+
         var tree = selectedSymbol.CreateTreeNode();
         if (tree.HasLocalParameters) tree.ResetLocalParameters(random);

trunk/sources/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.4/Creators/GrowTreeCreator.cs

@@ -74 +74 @@
       rootNode.AddSubtree(startNode);
 
-      Create(random, startNode, maxTreeDepth - 2);
+      Create(random, startNode, maxTreeDepth - 1);
       tree.Root = rootNode;
       return tree;