How #NeuralNetworks learn complex behaviour - Fundamental Math behind Backpropagation • /r/MachineLearning

How #NeuralNetworks learn complex behaviour - Fundamental Math behind Backpropagation (medium.com) The use of the symbol theta as input to the activation function is unfortunate as theta in ML literature is usually used to denote model parameters. I'm on the machine learning track and this post is legit and well made and right on. The images and explained equations unveil the underlying simplicity. This is what I come to reddit for, this is the signal I'm trying to filter for.