11.6.1 - Offline Evaluation
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is the purpose of offline evaluation in recommender systems?
💡 Hint: Consider how we test algorithms without live data.
Define precision in the context of recommender systems.
💡 Hint: Think about how many of your recommendations were liked.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main purpose of offline evaluation?
💡 Hint: Think about how we can check the system before it is live.
True or False: Recall measures how many actual relevant items were recommended.
💡 Hint: Recall captures the successes in finding relevant recommendations.
Get performance evaluation
Challenge Problems
Push your limits with advanced challenges
Given a recommendation system that suggested 20 items, with 10 being relevant and only 6 being recommended correctly, calculate precision and recall.
💡 Hint: Use the formulas to find these metrics.
Discuss how varying the threshold for recommendations can impact precision and recall.
💡 Hint: Think of how a tighter or looser net catches more or fewer fish.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.