Sample Python implementation of the algorithm presented in the following paper:
Block Coordinate Descent for Sparse NMF
Vamsi K. Potluru, Sergey M. Plis, Jonathan Le Roux, Barak A. Pearlmutter, Vince D. Calhoun, Thomas P. Hayes
ICLR 2013.
http://arxiv.org/abs/1301.3527