AI Agents & Applications · intermediate · concept 239 of 311 · Updated Nov 4, 2026
Recommendation Systems
AI that suggests content, products, or connections based on user behavior and preferences. Powers Netflix, YouTube, Amazon, and TikTok. Uses collaborative filtering, content-based, and hybrid approaches.
Key terms
Collaborative filteringContent-basedMatrix factorizationCold start
Learn these first
Videos
▶ What is an AI Recommendation Engine? ↗
IBM Technology · YouTube
▶ LLM Course – Build a Semantic Book Recommender (Python, OpenAI, LangChain, Gradio) ↗
freeCodeCamp.org · YouTube
Guides and articles