[Activity] Item-based Collaborative Filtering, Hands-On Back to: Building Recommender Systems with Machine Learning and AI Previous Lesson Item-based Collaborative Filtering Lesson 5 within section Neighborhood-Based Collaborative Filtering. You must enroll in this course to access course content. Next Lesson [Exercise] Tuning Collaborative Filtering Algorithms Lesson 7 within section Neighborhood-Based Collaborative Filtering. You must enroll in this course to access course content.