preference prediction by combining matrix factorization (MF) with latent topics of item content derived from latent topic …

recommendations. Differing from prior related methods, the authors integrate the matrix factorization (MF) and recurrent neural … network (RNN) to effectively describe the variation of user preferences over time. Findings A novel cumulative factorization …

The exact nonnegative matrix factorization (exact NMF) problem is the following: given an m-by-n nonnegative matrix X … and a factorization rank r, find, if possible, an m-by-r nonnegative matrix W and an r-by-n nonnegative matrix H such that … factorization rank such that an exact NMF exists. In particular, we disprove a conjecture on the nonnegative rank of a Kronecker …