diff --git a/data/imdb.zip b/data/imdb.zip
index 7083413c..dc45d13f 100644
Binary files a/data/imdb.zip and b/data/imdb.zip differ
diff --git a/src/TensorFlowNET.Utility/Compress.cs b/src/TensorFlowNET.Utility/Compress.cs
index c9fbe4b1..0efe59bd 100644
--- a/src/TensorFlowNET.Utility/Compress.cs
+++ b/src/TensorFlowNET.Utility/Compress.cs
@@ -3,6 +3,7 @@ using ICSharpCode.SharpZipLib.Tar;
 using System;
 using System.IO;
 using System.IO.Compression;
+using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -12,6 +13,9 @@ namespace TensorFlowNET.Utility
     {
         public static void UnZip(String gzArchiveName, String destFolder)
         {
+            var flag = gzArchiveName.Split(Path.DirectorySeparatorChar).Last().Split('.').First() + ".bin";
+            if (File.Exists(Path.Combine(destFolder, flag))) return;
+
             Console.WriteLine($"Extracting.");
             var task = Task.Run(() =>
             {
@@ -24,12 +28,16 @@ namespace TensorFlowNET.Utility
                 Console.Write(".");
             }
 
+            File.Create(Path.Combine(destFolder, flag));
             Console.WriteLine("");
             Console.WriteLine("Extracting is completed.");
         }
 
         public static void ExtractTGZ(String gzArchiveName, String destFolder)
         {
+            var flag = gzArchiveName.Split(Path.DirectorySeparatorChar).Last().Split('.').First() + ".bin";
+            if (File.Exists(Path.Combine(destFolder, flag))) return;
+
             Console.WriteLine($"Extracting.");
             var task = Task.Run(() =>
             {
@@ -49,6 +57,7 @@ namespace TensorFlowNET.Utility
                 Console.Write(".");
             }
 
+            File.Create(Path.Combine(destFolder, flag));
             Console.WriteLine("");
             Console.WriteLine("Extracting is completed.");
         }
diff --git a/test/TensorFlowNET.Examples/ImageRecognition.cs b/test/TensorFlowNET.Examples/ImageRecognition.cs
index 67760da0..73bf0ab1 100644
--- a/test/TensorFlowNET.Examples/ImageRecognition.cs
+++ b/test/TensorFlowNET.Examples/ImageRecognition.cs
@@ -88,8 +88,7 @@ namespace TensorFlowNET.Examples
             string zipFile = Path.Join(dir, "inception5h.zip");
             Utility.Web.Download(url, zipFile);
 
-            if (!File.Exists(Path.Join(dir, pbFile)))
-                Utility.Compress.UnZip(zipFile, dir);
+            Utility.Compress.UnZip(zipFile, dir);
 
             // download sample picture
             string pic = Path.Join(dir, "img", "grace_hopper.jpg");
diff --git a/test/TensorFlowNET.Examples/LabelImage.cs b/test/TensorFlowNET.Examples/LabelImage.cs
index a61a0cbc..afe86aec 100644
--- a/test/TensorFlowNET.Examples/LabelImage.cs
+++ b/test/TensorFlowNET.Examples/LabelImage.cs
@@ -106,8 +106,7 @@ namespace TensorFlowNET.Examples
             string zipFile = Path.Join(dir, $"{pbFile}.tar.gz");
             Utility.Web.Download(url, zipFile);
 
-            if (!File.Exists(Path.Join(dir, pbFile)))
-                Utility.Compress.ExtractTGZ(zipFile, dir);
+            Utility.Compress.ExtractTGZ(zipFile, dir);
 
             // download sample picture
             string pic = "grace_hopper.jpg";
diff --git a/test/TensorFlowNET.Examples/TextClassificationWithMovieReviews.cs b/test/TensorFlowNET.Examples/TextClassificationWithMovieReviews.cs
index 7900d06b..95ec24dc 100644
--- a/test/TensorFlowNET.Examples/TextClassificationWithMovieReviews.cs
+++ b/test/TensorFlowNET.Examples/TextClassificationWithMovieReviews.cs
@@ -3,12 +3,14 @@ using System.Collections.Generic;
 using System.IO;
 using System.Text;
 using Tensorflow;
+using NumSharp.Core;
 
 namespace TensorFlowNET.Examples
 {
     public class TextClassificationWithMovieReviews : Python, IExample
     {
         string dir = "text_classification_with_movie_reviews";
+        string dataFile = "imdb.zip";
 
         public void Run()
         {
@@ -17,17 +19,27 @@ namespace TensorFlowNET.Examples
 
         private void PrepareData()
         {
-
             Directory.CreateDirectory(dir);
 
             // get model file
-            string url = "https://storage.googleapis.com/download.tensorflow.org/models/inception_v3_2016_08_28_frozen.pb.tar.gz";
+            string url = $"https://github.com/SciSharp/TensorFlow.NET/raw/master/data/{dataFile}";
 
             string zipFile = Path.Join(dir, $"imdb.zip");
             Utility.Web.Download(url, zipFile);
+            Utility.Compress.UnZip(zipFile, dir);
+
+            // prepare training dataset
+            NDArray x_train = File.ReadAllLines(Path.Join(dir, "x_train.txt"));
+            NDArray labels_train = File.ReadAllLines(Path.Join(dir, "y_train.txt"));
+            NDArray indices_train = File.ReadAllLines(Path.Join(dir, "indices_train.txt"));
+            x_train = x_train[indices_train];
+            labels_train = labels_train[indices_train];
 
-            if (!File.Exists(Path.Join(dir, zipFile)))
-                Utility.Compress.ExtractTGZ(zipFile, dir);
+            NDArray x_test = File.ReadAllLines(Path.Join(dir, "x_test.txt"));
+            NDArray labels_test = File.ReadAllLines(Path.Join(dir, "y_test.txt"));
+            NDArray indices_test = File.ReadAllLines(Path.Join(dir, "indices_test.txt"));
+            x_test = x_test[indices_test];
+            labels_test = labels_test[indices_test];
         }
     }
 }