As the direct combination of a pairwise model (Eq. 1) with an entity model (Eq. 5), we consider the FE model from<cite> Riedel et al. (2013)</cite> , i.e., the additive combination of the two: P (s(a, b)) = σ(r s · e ab + r s,1 · e a + r s,2 · e b ) (6) Both the matrix factorization model F and entity model E can de defined as special cases of this model, by setting r s,1/2 or r s to zero, respectively. A problem with combining the two models additively, as in FE, is that one model can easily override the other.