Table 3.

Dimensionality of feature matrices

Matrix	Dimension
News-user engagement matrix (U)	(182 $\times$ 15,257)
Count matrix (N)	(182 $\times$ 1500)
User-community matrix (C)	(15,257 $\times$ 81)
Tensor (T)	(182 $\times$ (15,257 $\times$ 81)
Mode-1 tensor $(X_1)$	(182 $\times$ (15,257 $\times$ 81))
Input matrix (content + context)	(182 $\times$ 1503)