Recommendation System, Recommender Systems, Machine Learning, Data Science, Big Data.
annotations Aᴵ(i) — e.g. “price > 100 $”, “book”, … Then we model each user tag by a latent factor xᵁₐ ∈ Rᶠ and by a bias term bᵁₐ ∈ R, and we assume that the user vector representation pᵤ and its associated bias bᵤ can be expressed simply as the sum of these terms xᵁₐ and bᵁₐ, respectively. We