Breaking Down YouTube’s Recommendation Algorithm

Opening the “bag of tricks” that makes a modern recommender system work

Samuel Flender
Towards Data Science
7 min readApr 17, 2023

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(Logo design Eyestetix Studio, background design by Dan Cristian Pădureț)

Recommender systems have become one of the most ubiquitous industrial Machine Learning applications of our times, but little is being published about how they actually work in practice.

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