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math.DS2020
Kernel-based approximation of the Koopman generator and Schrödinger operator
Stefan Klus, Feliks Nüske, Boumediene Hamzi
Many dimensionality and model reduction techniques rely on estimating dominant eigenfunctions of associated dynamical operators from data. Important examples include the Koopman op…
math.DS2019
Spectral Properties of Effective Dynamics from Conditional Expectations
Feliks Nüske, Péter Koltai, Lorenzo Boninsegna +1
The reduction of high-dimensional systems to effective models on a smaller set of variables is an essential task in many areas of science. For stochastic dynamics governed by diffu…