note on prereqs

Author: rguthrie3

Deep Learning for Natural Language Processing with Pytorch.ipynb

@@ -8,7 +8,7 @@
     "This tutorial will walk you through the key ideas of deep learning programming using Pytorch.\n",
     "Many of the concepts (such as the computation graph abstraction and autograd) are not unique to Pytorch and are relevant to any deep learning tool kit out there.\n",
     "\n",
-    "I am writing this tutorial to focus specifically on NLP for people who have never written code in any deep learning framework (e.g, TensorFlow, Theano, Keras, Dynet)."
+    "I am writing this tutorial to focus specifically on NLP for people who have never written code in any deep learning framework (e.g, TensorFlow, Theano, Keras, Dynet).  It assumes working knowledge of core NLP problems: part-of-speech tagging, language modeling, etc.  It also assumes familiarity with neural networks at the level of an intro AI class (such as one from the Russel and Norvig book).  Usually, these courses cover the basic backpropogation algorithm on feed-forward neural networks, and make the point that they are chains of compositions of linearities and non-linearities.  This tutorial aims to get you started writing deep learning code, given you have this prerequisite knowledge."
    ]
   },
   {