Recommendation System, Recommender Systems, Machine Learning, Data Science, Big Data.
Factorization for Explicit Feedback The simplest idea is to model user-item interactions through a linear model. To learn the values of pᵤ and qᵢ, we can minimize a regularized MSE loss over the set K of pairs (u, i) for which rᵤᵢ is known. The algorithm so obtained is called probabilistic matrix