Neural networks

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1. neural networks
   1. refs

• http://neuralnetworksanddeeplearning.com/chap3.html#softmax
• https://www.tensorflow.org/versions/r0.12/tutorials/mnist/beginners/index.html

1. 1. setup

   $ mkdir p3test
   $ cd p3test/
   $ virtualenv -p /c/Users/tim/Anaconda3/python.exe venv 
   //for python 3.5 or  /c/Python27/python.exe for version2.7
   tim@TIM-HP /c/wamp/www/python/p3test (master)
   $ source venv/Scripts/activate

prove its working

   $ python
   Python 3.5.2 |Continuum Analytics, Inc.| (default, Jul  5 2016, 11:41:13) [MSC v.1900 64 bit (AMD64)] on win32
   Type "help", "copyright", "credits" or "license" for more information.
   >>> import tensorflow as tf
   >>> sess=tf.Session()
   >>> answer - tf.matmul([[7,], [6,]])

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