In the context of recommender systems, what is the primary challenge addressed by matrix factorization techniques?
- Cold start problem
- Sparsity problem
- Scalability problem
- User diversity problem
Matrix factorization techniques primarily address the sparsity problem in recommender systems. In such systems, user-item interaction data is typically sparse, and matrix factorization helps in predicting missing values by factoring the observed data matrix into latent factors. This mitigates the sparsity challenge.
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