Chapter 9. A Recommender System
Recommender systems are common these days. You may not have noticed, but you might already be a user or receiver of such a system somewhere. Most of the well-performing e-commerce platforms use recommendation systems to recommend items to their users. When you see on the Amazon website that a book is recommended to you based on your earlier preferences, purchases, and browse history, Amazon is actually using such a recommendation system. Similarly, Netflix uses its recommendation system to suggest movies for you.
A recommender or recommendation system is used to recommend a product or information often based on user characteristics, preferences, history, and so on. So, a recommendation is always personalized.
Until ...
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