Index: /branches/DataPreprocessing/HeuristicLab 3.3.sln
===================================================================
--- /branches/DataPreprocessing/HeuristicLab 3.3.sln	(revision 10663)
+++ /branches/DataPreprocessing/HeuristicLab 3.3.sln	(revision 10664)
@@ -1910,6 +1910,3 @@
 		HideSolutionNode = FALSE
 	EndGlobalSection
-	GlobalSection(Performance) = preSolution
-		HasPerformanceSessions = true
-	EndGlobalSection
 EndGlobal
Index: /branches/DataPreprocessing/HeuristicLab.DataPreprocessing/3.3/HeuristicLab.DataPreprocessing-3.3.csproj
===================================================================
--- /branches/DataPreprocessing/HeuristicLab.DataPreprocessing/3.3/HeuristicLab.DataPreprocessing-3.3.csproj	(revision 10663)
+++ /branches/DataPreprocessing/HeuristicLab.DataPreprocessing/3.3/HeuristicLab.DataPreprocessing-3.3.csproj	(revision 10664)
@@ -79,4 +79,5 @@
     <Compile Include="Implementations\Filter\IFilter.cs" />
     <Compile Include="Implementations\ManipulationLogic.cs" />
+    <Compile Include="Implementations\Transformation.cs" />
     <Compile Include="Interfaces\IPreprocessingData.cs" />
     <Compile Include="Interfaces\IDataGridLogic.cs" />
@@ -141,4 +142,8 @@
       <Name>HeuristicLab.Data-3.3</Name>
     </ProjectReference>
+    <ProjectReference Include="..\..\HeuristicLab.Encodings.SymbolicExpressionTreeEncoding\3.4\HeuristicLab.Encodings.SymbolicExpressionTreeEncoding-3.4.csproj">
+      <Project>{06d4a186-9319-48a0-bade-a2058d462eea}</Project>
+      <Name>HeuristicLab.Encodings.SymbolicExpressionTreeEncoding-3.4</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\HeuristicLab.Optimization\3.3\HeuristicLab.Optimization-3.3.csproj">
       <Project>{14ab8d24-25bc-400c-a846-4627aa945192}</Project>
Index: /branches/DataPreprocessing/HeuristicLab.DataPreprocessing/3.3/Implementations/Transformation.cs
===================================================================
--- /branches/DataPreprocessing/HeuristicLab.DataPreprocessing/3.3/Implementations/Transformation.cs	(revision 10664)
+++ /branches/DataPreprocessing/HeuristicLab.DataPreprocessing/3.3/Implementations/Transformation.cs	(revision 10664)
@@ -0,0 +1,42 @@
+﻿#region License Information
+/* HeuristicLab
+ * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
+ *
+ * This file is part of HeuristicLab.
+ *
+ * HeuristicLab is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * HeuristicLab is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
+
+namespace HeuristicLab.DataPreprocessing.Implementations {
+  public abstract class Transformation {
+
+    protected ITransactionalPreprocessingData preprocessingData;
+
+    protected string column;
+
+    protected Transformation(ITransactionalPreprocessingData preprocessingData, string column) {
+      this.preprocessingData = preprocessingData;
+      this.column = column;
+    }
+
+    public abstract void Transform();
+
+    public abstract ISymbolicExpressionTree GenerateInverseTransformation();
+
+    public abstract void Check();
+  }
+}
Index: /branches/DataPreprocessing/HeuristicLab.DataPreprocessing/3.3/Plugin.cs.frame
===================================================================
--- /branches/DataPreprocessing/HeuristicLab.DataPreprocessing/3.3/Plugin.cs.frame	(revision 10663)
+++ /branches/DataPreprocessing/HeuristicLab.DataPreprocessing/3.3/Plugin.cs.frame	(revision 10664)
@@ -41,4 +41,5 @@
   [PluginDependency("HeuristicLab.Problems.DataAnalysis","3.4")]
   [PluginDependency("HeuristicLab.Problems.DataAnalysis.Views","3.4")]
+  [PluginDependency("HeuristicLab.Encodings.SymbolicExpressionTreeEncoding","3.4")]
   public class HeuristicLabDataPreprocessingPlugin : PluginBase {
   }
