Set to True, both W and H will be estimated from initial guesses. Set to False, only W will be estimated. verbose : int, default=0 The verbosity level. shuffle : bool, default=False If true, randomize the order of coordinates in the CD solver. random_state : int, RandomState instance or None, default=None Used to randomize the coordinates in the CD solver, when ``shuffle`` is set to ``True``. Pass an int for reproducible results across multiple function calls. See :term:`Glossary `. Returns ------- W : ndarray of shape (n_samples, n_components) Solution to the non-negative least squares problem. H : ndarray of shape (n_components, n_features) Solution to the non-negative least squares problem. n_iter : int The number of iterations done by the algorithm. References ---------- .. [1] :doi:`"Fast local algorithms for large scale nonnegative matrix and tensor factorizations" <10.1587/transfun.E92.A.708>` Cichocki, Andrzej, and P. H. A. N. Anh-Huy. IEICE transactions on fundamentals of electronics, communications and computer sciences 92.3: 708-721, 2009. Ú