👋 Welcome

Hi, this is Razvan. I’m sharing these learning notes mainly for myself, as a way to think more clearly about what I’m learning and to document the process as I go. Most of them are written for personal use. Some sections are notes on things I find challenging, while others use AI to help me recall the core ideas.

Logistic Regression with NumPy

Building a logistic regression component from scratch in Python using NumPy.

Linear Regression

Ordinary least squares as a linear mean model: setup, normal equations, and gradient updates.