Recommendation Systems, Explained Like You’re 5 (With Code)

📰 Medium · Machine Learning

Learn how recommendation systems work with simple math and code examples, and understand how they predict user preferences

beginner Published 14 Sept 2026
Action Steps
  1. Build a basic recommendation system using collaborative filtering
  2. Run a matrix factorization algorithm to reduce dimensionality
  3. Configure a model to predict user ratings based on item similarities
  4. Test the model using a dataset of user interactions
  5. Apply the recommendation system to a real-world problem, such as suggesting movies or products
Who Needs to Know This

Data scientists, machine learning engineers, and product managers can benefit from understanding recommendation systems to improve user experience and engagement

Key Insight

💡 Recommendation systems use collaborative filtering and matrix factorization to predict user preferences based on item similarities

Share This
🤖 How do recommendation systems work? Learn the simple math behind predicting user preferences! #MachineLearning #RecommendationSystems

Full Article

How Netflix knew I’d like a Action thriller before I did, and the surprisingly simple math behind it Continue reading on Medium »
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