Symmetric Nonnegative Trifactorization of Pattern Matrices

Damjana Kokol Bukovšek, Helena Šmigoc

A factorization of an $n\times n$ nonnegative symmetric matrix $A$ of the form $BC{B}^T$, where $C$ is a $k\times k$ symmetric matrix, and both $B$ and $C$ are required to be nonne…