diff --git a/.gitignore b/.gitignore
index 89c7162..3ac0a22 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@ logs/*
 tf_logs/*
 images/**/*.png
 my_*
+datasets/words
diff --git a/09_up_and_running_with_tensorflow.ipynb b/09_up_and_running_with_tensorflow.ipynb
index 138ad7d..64e86fc 100644
--- a/09_up_and_running_with_tensorflow.ipynb
+++ b/09_up_and_running_with_tensorflow.ipynb
@@ -1205,7 +1205,7 @@
     "        return tf.maximum(linear, threshold, name=\"max\")\n",
     "\n",
     "X = tf.placeholder(tf.float32, shape=(None, n_features), name=\"X\")\n",
-    "with tf.variable_scope(\"\") as scope:\n",
+    "with tf.variable_scope(\"\", default_name=\"\") as scope:\n",
     "    first_relu = relu(X)     # create the shared variable\n",
     "    scope.reuse_variables()  # then reuse it\n",
     "    relus = [first_relu] + [relu(X) for i in range(4)]\n",
@@ -1231,7 +1231,7 @@
     "with tf.variable_scope(\"param\", reuse=True):\n",
     "    y = tf.get_variable(\"x\")\n",
     "\n",
-    "with tf.variable_scope(\"\", reuse=True):\n",
+    "with tf.variable_scope(\"\", default_name=\"\", reuse=True):\n",
     "    z = tf.get_variable(\"param/x\", shape=(), initializer=tf.constant_initializer(0.))\n",
     "\n",
     "print(x is y)\n",
@@ -1688,7 +1688,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.5.1"
+   "version": "3.5.2"
   },
   "nav_menu": {
    "height": "603px",
diff --git a/11_deep_learning.ipynb b/11_deep_learning.ipynb
index 761a60f..5a6a44b 100644
--- a/11_deep_learning.ipynb
+++ b/11_deep_learning.ipynb
@@ -511,7 +511,7 @@
    },
    "outputs": [],
    "source": [
-    "with tf.variable_scope(\"\", reuse=True):\n",
+    "with tf.variable_scope(\"\", default_name=\"\", reuse=True):  # root scope\n",
     "    weights1 = tf.get_variable(\"hidden1/weights\")\n",
     "    weights2 = tf.get_variable(\"hidden2/weights\")\n",
     "    "
@@ -820,7 +820,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 36,
    "metadata": {
     "collapsed": false
    },
@@ -832,7 +832,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 37,
    "metadata": {
     "collapsed": false
    },
@@ -910,7 +910,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.5.1"
+   "version": "3.5.2"
   },
   "nav_menu": {
    "height": "360px",
diff --git a/13_convolutional_neural_networks.ipynb b/13_convolutional_neural_networks.ipynb
index f45559b..6bf1b29 100644
--- a/13_convolutional_neural_networks.ipynb
+++ b/13_convolutional_neural_networks.ipynb
@@ -592,7 +592,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.5.1"
+   "version": "3.5.2"
   },
   "nav_menu": {},
   "toc": {
diff --git a/requirements.txt b/requirements.txt
index d2a45c6..efd6eb5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,32 +31,32 @@ https://github.com/ipython-contrib/jupyter_contrib_nbextensions/tarball/master
 # See https://www.tensorflow.org/versions/master/get_started/os_setup.html
 
 # Ubuntu/Linux 64-bit, CPU only, Python 2.7
-#https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.10.0-cp27-none-linux_x86_64.whl
+#https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.11.0-cp27-none-linux_x86_64.whl
 
 # Ubuntu/Linux 64-bit, GPU enabled, Python 2.7
-#https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow-0.10.0-cp27-none-linux_x86_64.whl
+#https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow-0.11.0-cp27-none-linux_x86_64.whl
 
 # Mac OS X, CPU only, Python 2.7:
-#https://storage.googleapis.com/tensorflow/mac/cpu/tensorflow-0.10.0-py2-none-any.whl
+#https://storage.googleapis.com/tensorflow/mac/cpu/tensorflow-0.11.0-py2-none-any.whl
 
 # Mac OS X, GPU enabled, Python 2.7:
-#https://storage.googleapis.com/tensorflow/mac/gpu/tensorflow-0.10.0-py2-none-any.whl
+#https://storage.googleapis.com/tensorflow/mac/gpu/tensorflow-0.11.0-py2-none-any.whl
 
 # Ubuntu/Linux 64-bit, CPU only, Python 3.4
-#https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.10.0-cp34-cp34m-linux_x86_64.whl
+#https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.11.0-cp34-cp34m-linux_x86_64.whl
 
 # Ubuntu/Linux 64-bit, GPU enabled, Python 3.4
-#https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow-0.10.0-cp34-cp34m-linux_x86_64.whl
+#https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow-0.11.0-cp34-cp34m-linux_x86_64.whl
 
 # Ubuntu/Linux 64-bit, CPU only, Python 3.5
-https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.10.0-cp35-cp35m-linux_x86_64.whl
+https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.11.0-cp35-cp35m-linux_x86_64.whl
 
 # Ubuntu/Linux 64-bit, GPU enabled, Python 3.5
-#https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow-0.10.0-cp35-cp35m-linux_x86_64.whl
+#https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow-0.11.0-cp35-cp35m-linux_x86_64.whl
 
 # Mac OS X, CPU only, Python 3.4 or 3.5:
-#https://storage.googleapis.com/tensorflow/mac/cpu/tensorflow-0.10.0-py3-none-any.whl
+#https://storage.googleapis.com/tensorflow/mac/cpu/tensorflow-0.11.0-py3-none-any.whl
 
 # Mac OS X, GPU enabled, Python 3.4 or 3.5:
-#https://storage.googleapis.com/tensorflow/mac/gpu/tensorflow-0.10.0-py3-none-any.whl
+#https://storage.googleapis.com/tensorflow/mac/gpu/tensorflow-0.11.0-py3-none-any.whl