A Python package implementing the stretched NMF algorithm.
copied from cf-staging / diffpy.snmfdiffpy.snmf implements the stretched non negative matrix factorization (sNMF) and sparse stretched NMF (ssNMF) algorithms. This algorithm is designed to do an NMF factorization on a set of signals ignoring any uniform stretching of the signal on the independent variable axis. For example, for powder diffraction data taken from samples containing multiple chemical phases where the measurements were done at different temperatures and the materials were undergoing thermal expansion.
