Faster-than-fast NMF using random projections and Nesterov iterations
Farouk Yahaya, Matthieu Puigt, Gilles Delmaire, Gilles Roussel · arXiv (Cornell University) · 2018
Random projections have been recently implemented in Nonnegative Matrix Factorization (NMF) to speed-up the NMF computations, with a negligible loss of performance. In this paper, we investigate the effects of such projections when the NMF technique uses the fast Nesterov gradient descent (NeNMF). We experimentally show the randomized subspace iteration to significantly speed-up NeNMF.