Math is about packing things down into small conceptual boxes that we can upload into our brains. It's not about thousand page books... Don't settle for a partial understanding.

British Mathematician Richard Thomas

My LaTeX-formatted notes covering foundational concepts in mathematics, statistics, and computer science are available on GitHub.

Starting point of linear regression and why we prefer matrix algebra

Ironically, in many cases, especially in linear regression, calculations become simpler when approached through multi-dimensional matrix algebra rather than one-dimensional methods. Let's explore the foundational concepts of linear regression to understand this phenomenon.