Nadler, Boaz, Stephane Lafon, Ronald Coifman, and Ioannis Kevrekidis. (2006) 2006. “Diffusion Maps, Spectral Clustering and Reaction Coordinates of Dynamical Systems”. Applied and Computational Harmonic Analysis 21 (1): 113-27. Reference Link
Coifman, Kevrekidis, Lafon, Maggioni, and Nadler. 2008. “DIFFUSION MAPS, REDUCTION COORDINATES, AND LOW DIMENSIONAL REPRESENTATION OF STOCHASTIC SYSTEMS”. Multiscale Modeling & Simulation 7 (2): 842-64. Reference Link