Exploiting sparsity and equation-free architectures in complex systems J.L. Proctor, S.L. Brunton, B.W. Brunton and J.N. Kutz Eur. Phys. J. Special Topics, 223 13 (2014) 2665-2684 Published online: 10 December 2014 DOI: 10.1140/epjst/e2014-02285-8