Further reading

• Collaborative Filtering for Implicit Feedback Datasets: http://yifanhu.net/PUB/cf.pdf
• Collaborative Filtering using Alternating Least Squares: http://danielnee.com/2016/09/collaborative-filtering-using-alternating-least-squares/
• ALS Implicit Collaborative Filtering: https://medium.com/radon-dev/als-implicit-collaborative-filtering-5ed653ba39fe
• Collaborative Filtering: https://datasciencemadesimpler.wordpress.com/tag/alternating-least-squares/
• The mlpack library official site: https://www.mlpack.org/
• The Armadillo library official site: http://arma.sourceforge.net/
• Variational Autoencoders for Collaborative Filtering, by Dawen Liang, Rahul G. Krishnan, Matthew D. Hoffman, and Tony Jebara: https://arxiv.org/abs/1802.05814
• Deep Learning-Based Recommender System: A Survey and New Perspectives, by Shuai Zhang, Lina Yao, Aixin Sun, and Yi Tay: https://arxiv.org/abs...