Algorithms of Unconstrained Non-Negative Latent Factor Analysis for Recommender Systems - Luo, Xin; Zhou, MengChu; Li, Shuai; Wu, Di; Liu, Zhigang; Shang, Mingsheng (IEEE transactions on big data, 2021)
Keywords: Algorithms; Big Data; collaborative filtering; Computational modeling; Constraint modelling; Data models; Factor analysis; high-dimensional and sparse matrix; Industrial applications; latent factor analysis; Mapping; Missing data; Model accuracy; Non-negative latent factor analysis; non-negativity; recommender system; Recommender systems; Scalability; Sparse matrices; Training; unconstrained optimization