Gradient descent in R

It has been well over a year since my last entry, I have been rather quiet because someone has been rather loud 👶 Just last week I found some time to rewrite a draft on gradient descent from about two years ago, so here we are - back in business! Gradient descent is a fundamental …

Object detection and tracking in Python

Over six months ago I decided to embark on a learning journey of image analysis using Python. After carefully reviewing various options I took a two-course offer from OpenCV.org for about US$479, chiefly because of i) the pivotal role of OpenCV as an open-source toolkit in computer vision, ii) the relevance of the course modules, and iii) the vast …

UMAP clustering in Python

Embracing Python in this tutorial series has long been a matter of time. For the last five years I have been championing R mostly because of its wide applicability and quite frankly, my own convenience. However, there is little any programming language can do to singlehandedly solve a variety of statistical and computational challenges and …

Audio classification in R

Visiting Berlin in December 2013, some friends and I spent one evening at the White Trash, a rockabilly-vibe bar decorated with hanging skeletons and a couple of conspicuous portraits of Ian "Lemmy", the late frontman of Motörhead. Incidentally, I remember trying to guess what song was playing at a certain moment when a friend opened Shazam from …