A Neural Network in 11 lines of Python

By Andrew Trask This tutorial teaches backpropagation via a very simple toy example, a short python implementation. Consider trying to predict the output column given the three input columns. We could solve this problem by simply measuring statistics between the input values and the output values. If we did so, we would see that the leftmost input column is perfectly correlated with the output. Let's jump right in and use it to do this.