diff --git a/TensorFlow.NET.sln b/TensorFlow.NET.sln
index 880d886b..0f9960f0 100644
--- a/TensorFlow.NET.sln
+++ b/TensorFlow.NET.sln
@@ -13,6 +13,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TensorFlowNET.Utility", "sr
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TensorFlowNET.Visualization", "TensorFlowNET.Visualization\TensorFlowNET.Visualization.csproj", "{4BB2ABD1-635E-41E4-B534-CB5B6A2D754D}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "NumSharp.Core", "..\NumSharp\src\NumSharp.Core\NumSharp.Core.csproj", "{E8340C61-12C1-4BEE-A340-403E7C1ACD82}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -39,6 +41,10 @@ Global
 		{4BB2ABD1-635E-41E4-B534-CB5B6A2D754D}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{4BB2ABD1-635E-41E4-B534-CB5B6A2D754D}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{4BB2ABD1-635E-41E4-B534-CB5B6A2D754D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E8340C61-12C1-4BEE-A340-403E7C1ACD82}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E8340C61-12C1-4BEE-A340-403E7C1ACD82}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E8340C61-12C1-4BEE-A340-403E7C1ACD82}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E8340C61-12C1-4BEE-A340-403E7C1ACD82}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/src/TensorFlowNET.Core/Contrib/Learn/Preprocessing/VocabularyProcessor.cs b/src/TensorFlowNET.Core/Contrib/Learn/Preprocessing/VocabularyProcessor.cs
new file mode 100644
index 00000000..00f2c9b0
--- /dev/null
+++ b/src/TensorFlowNET.Core/Contrib/Learn/Preprocessing/VocabularyProcessor.cs
@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Tensorflow.Contrib.Learn.Preprocessing
+{
+    public class VocabularyProcessor
+    {
+        private int _max_document_length;
+        private int _min_frequency;
+
+        public VocabularyProcessor(int max_document_length,
+            int min_frequency)
+        {
+            _max_document_length = max_document_length;
+            _min_frequency = min_frequency;
+        }
+    }
+}
diff --git a/src/TensorFlowNET.Core/TensorFlowNET.Core.csproj b/src/TensorFlowNET.Core/TensorFlowNET.Core.csproj
index 267678b1..949166c1 100644
--- a/src/TensorFlowNET.Core/TensorFlowNET.Core.csproj
+++ b/src/TensorFlowNET.Core/TensorFlowNET.Core.csproj
@@ -51,4 +51,8 @@ Fixed import name scope issue.</PackageReleaseNotes>
     <Content CopyToOutputDirectory="PreserveNewest" Include="./runtimes/win-x64/native/tensorflow.dll" Link="tensorflow.dll" Pack="true" PackagePath="runtimes/win-x64/native/tensorflow.dll" />
   </ItemGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\NumSharp\src\NumSharp.Core\NumSharp.Core.csproj" />
+  </ItemGroup>
+
 </Project>
diff --git a/test/TensorFlowNET.Examples/CnnTextClassification/CnnTextTrain.cs b/test/TensorFlowNET.Examples/CnnTextClassification/CnnTextTrain.cs
index 9bc19989..ef4b0749 100644
--- a/test/TensorFlowNET.Examples/CnnTextClassification/CnnTextTrain.cs
+++ b/test/TensorFlowNET.Examples/CnnTextClassification/CnnTextTrain.cs
@@ -1,6 +1,7 @@
 using NumSharp.Core;
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Text;
 using Tensorflow;
 
@@ -46,7 +47,11 @@ namespace TensorFlowNET.Examples.CnnTextClassification
 
         public (NDArray, NDArray, NDArray, NDArray, NDArray) preprocess()
         {
-            DataHelpers.load_data_and_labels(positive_data_file, negative_data_file);
+            var (x_text, y) = DataHelpers.load_data_and_labels(positive_data_file, negative_data_file);
+
+            // Build vocabulary
+            int max_document_length = x_text.Select(x => x.Split(' ').Length).Max();
+            var vocab_processor = learn.preprocessing.VocabularyProcessor(max_document_length)
             throw new NotImplementedException("");
         }
     }
diff --git a/test/TensorFlowNET.Examples/CnnTextClassification/DataHelpers.cs b/test/TensorFlowNET.Examples/CnnTextClassification/DataHelpers.cs
index 117ae187..043b6945 100644
--- a/test/TensorFlowNET.Examples/CnnTextClassification/DataHelpers.cs
+++ b/test/TensorFlowNET.Examples/CnnTextClassification/DataHelpers.cs
@@ -17,7 +17,7 @@ namespace TensorFlowNET.Examples.CnnTextClassification
         /// <param name="positive_data_file"></param>
         /// <param name="negative_data_file"></param>
         /// <returns></returns>
-        public static (NDArray, NDArray) load_data_and_labels(string positive_data_file, string negative_data_file)
+        public static (string[], NDArray) load_data_and_labels(string positive_data_file, string negative_data_file)
         {
             Directory.CreateDirectory("CnnTextClassification");
             Utility.Web.Download(positive_data_file, "CnnTextClassification/rt-polarity.pos");
@@ -39,9 +39,8 @@ namespace TensorFlowNET.Examples.CnnTextClassification
 
             var positive_labels = positive_examples.Select(x => new int[2] { 0, 1 }).ToArray();
             var negative_labels = negative_examples.Select(x => new int[2] { 1, 0 }).ToArray();
-            // var y = np.
-            // return (x_text, y);
-            throw new NotImplementedException("load_data_and_labels");
+            var y = np.concatenate(new int[][][] { positive_labels, negative_labels });
+            return (x_text.ToArray(), y);
         }
 
         private static string clean_str(string str)
diff --git a/test/TensorFlowNET.Examples/TensorFlowNET.Examples.csproj b/test/TensorFlowNET.Examples/TensorFlowNET.Examples.csproj
index e32a8092..34a29361 100644
--- a/test/TensorFlowNET.Examples/TensorFlowNET.Examples.csproj
+++ b/test/TensorFlowNET.Examples/TensorFlowNET.Examples.csproj
@@ -11,6 +11,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\..\..\NumSharp\src\NumSharp.Core\NumSharp.Core.csproj" />
     <ProjectReference Include="..\..\src\TensorFlowNET.Core\TensorFlowNET.Core.csproj" />
     <ProjectReference Include="..\..\src\TensorFlowNET.Utility\TensorFlowNET.Utility.csproj" />
   </ItemGroup>