RECOMMENDER SYSTEMS: A GLOBAL OVERVIEW

From a business impact standpoint, recommendation systems help companies to increase their ROI by personalizing the content, based on user preferences. Let's take a concrete example. When you watch a video on YouTube, and you see a list of videos to watch next, that list is being built by a recommendation system. Recommendation engines are not just about suggesting products to users, they can also suggest users to products. Generally speaking, keep in mind that recommendation systems are not only about products that can be bought, as shown by Facebook friends and Instagram posts suggestions, based on recommendation systems.