Minor Review: notebooks/feed-forward-networks/exercise-nn-rework.ipynb

• Added an introduction (previously marked as TODO)

In this exercise, you will analyze an existing implementation of a neural network to recognise handwritten digits. It is an adaptation of the network presented by Michael Nielsen in his book Neural Networks and Deep Learning. The aim is to identify and understand how the different components that make up the network interact. With this overview of the network, you will refactor the script-like approach into a more modular implementation that clearly distinguishes between forward pass, computation of loss, backward pass and training.

• Added Knowledge (previously marked as TODO)

• Read at least Chapter 1 of Michael Nielsen's Neural Networks and Deep Learning. (NIE15)

• Added Neural Networks and Deep Learning to citations

• minor grammar/typo fixes