matplotlib Archives - Alan Richmond

Advanced, Artificial Intelligence

A Neural Network in Python, Part 2: activation functions, bias, SGD, etc.

by Alan • 9th February 2017 • 0 Comments

This is Part 2 of A Neural Network in Python, which was a very simple neural network to learn the XOR function. This part builds on that example to demonstrate more activation functions, learning a simple math function, …

Advanced, Artificial Intelligence

A Neural Network in Python, Part 1: sigmoid function, gradient descent & backpropagation

by Alan • 31st January 2017 • 4 Comments

In this article, I’ll show you a toy example to learn the XOR logical function. My objective is to make it as easy as possible for you to to see how the basic ideas work, and to provide a basis …

Audio, Intermediate

Make ‘Computer Music’ with a very small program!

by Alan • 11th May 2015 • 1 Comment

This is a fun little program to generate ‘computer music’, specifically ‘bytebeats’ which sound like the chip music featured in the early computer games. As is well-known, sound can be digitised and stored in computers. Conversely, numbers can be converted …