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From Amazon, to Spotify, to thermostats, recommendation systems are everywhere. The ability to provide recommendations for your users is becoming a crucial feature for modern applications. In this talk I’ll show you how you can use Ruby to build recommendation systems for your users. You don’t need a PhD to build a simple recommendation engine – all you need is Ruby.

Together we’ll dive into the dark arts of machine learning and you’ll discover that writing a basic recommendation engine is not as hard as you might have imagined. Using Ruby I’ll teach you some of the common algorithms used in recommender systems, such as: Collaborative Filtering, K-Nearest Neighbor, and Pearson Correlation Coefficient. At the end of the talk you should be on your way to writing your own basic recommendation system in Ruby.