7587 2021 eng 416 article 0 -- -- -- A probabilistic algorithm for aggregating vastly undersampled large Markov chains Physica D: Nonlinear Phenomena urn:nbn:de:0297-zib-75874 https://doi.org/10.1016/j.physd.2020.132799 yes urn:nbn:de:0297-zib-78688 Andreas Bittracher Erlinda Körnig Christof Schütte Numerical Mathematics Schütte, Christof MathPlusAA1-1