Gillis, Nicolas; Glineur, François; Tuyttens, Daniel; … - Center for Operations Research and Econometrics (CORE), … - 2015
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 …. Finally, we discuss the use of these heuristics to gain insight on the behavior of the nonnegative rank, i.e., the minimum … factorization rank such that an exact NMF exists. In particular, we disprove a conjecture on the nonnegative rank of a Kronecker …