Practice Matrix Factorization - 11.4.2 | 11. Recommender Systems | Data Science Advance
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is matrix factorization?

πŸ’‘ Hint: Think about how movie recommendations work.

Question 2

Easy

Name one technique used in matrix factorization.

πŸ’‘ Hint: Consider different mathematical methods for matrix analysis.

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 primary purpose of matrix factorization?

  • To enhance data privacy
  • To decompose matrices into latent factors
  • To store user preferences

πŸ’‘ Hint: Think about what insights can be derived from matrix decomposition.

Question 2

True or False: NMF allows negative values in its matrices.

  • True
  • False

πŸ’‘ Hint: Consider the implications of negative ratings.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given a user-item interaction matrix of ratings from 1-5 for 5 users and 5 items, demonstrate how you would apply SVD to find the latent factors. Include detailed computation steps.

πŸ’‘ Hint: Break the steps into individual matrix computations.

Question 2

Describe a scenario where the choice between SVD and NMF might fundamentally impact the results of a recommendation engine. Provide rationale for each choice.

πŸ’‘ Hint: Think about the user base and nature of data you would deal with.

Challenge and get performance evaluation