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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the purpose of offline evaluation in recommender systems?
💡 Hint: Consider how we test algorithms without live data.
Question 2
Easy
Define precision in the context of recommender systems.
💡 Hint: Think about how many of your recommendations were liked.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the main purpose of offline evaluation?
- To gather live user feedback
- To simulate performance with historical data
- To collect new interaction data
💡 Hint: Think about how we can check the system before it is live.
Question 2
True or False: Recall measures how many actual relevant items were recommended.
- True
- False
💡 Hint: Recall captures the successes in finding relevant recommendations.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
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.
Question 2
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.
Challenge and get performance evaluation