Uniqueness of nonnegative matrix factorizations by rigidity theory
In the joint work with Robert Krone we study the uniqueness of nonnegative matrix factorizations using ideas from the rigidity theory. We give so far the strongest necessary condition for a nonnegative matrix factorization to be unique. Our article has been published in the SIAM Journal of Matrix Analysis and Applications.
Kaie Kubjas
Assistant Professor
My research interests include nonlinear algebra, algebraic statistics, matrix and tensor decompositions.