Recommendation Systems Blog — Manoj M Machine Learning · Technical Blog Assignment The "People Like You" Algorithm: How Recommendation Systems Really Work From a 2003 Amazon paper that changed e-commerce forever, to YouTube's billion-user AI engine — a student's honest guide to recommendation systems. Student Manoj M Reg. No. 24BAD067 Department AI & Data Science Year 2026 Course Machine Learning College Kumaraguru College of Technology Before I begin: I used to think Netflix and YouTube were psychic. This semester in ML, I finally learned the engineering and math behind these suggestions. This blog covers one landmark research paper and one real-world system — written so that anyone, not just engineers, can follow along. Why Recommendation Systems Matter These aren't small features. They are the revenue engine of the biggest platforms on earth: 35% of Amazon's revenu...