I spent some time last year learning about the math behind neural networks and summarized it in this step by step post that you might find helpful [1]. The pos

I spent some time last year learning about the math behind neural networks and summarized it in this step by step post that you might find helpful [1]. The post has been on HackerNews in the past and is the top Google result for "backpropagation". [1] http://mattmazur.com/2015/03/17/a-step-by-step-backpropagation-example/ http://mattmazur.com/2015/03/17/a-step-by-step-backpropagati...