no code implementations • 14 Dec 2022 • Charles A. Johnson, Shara Balakrishnan, Enoch Yeung
Recently, deep learning combined with EDMD has been used to learn novel dictionary functions in an algorithm called deep dynamic mode decomposition (deepDMD).
no code implementations • 14 Dec 2022 • Charles A. Johnson, Shara Balakrishnan, Enoch Yeung
The SILL dictionary's nonlinear functions are homogeneous, a norm in data-driven dictionary learning of Koopman operators.
no code implementations • 27 Jun 2022 • Charles A. Johnson, Shara Balakrishnan, Enoch Yeung
We discover a novel class of dictionary functions to approximate Koopman observables.
no code implementations • 30 Sep 2019 • Zhiyuan Liu, Guohui Ding, Lijun Chen, Enoch Yeung
We propose an alternating optimization algorithm to the nonconvex Koopman operator learning problem for nonlinear dynamic systems.
no code implementations • 9 Jan 2019 • W. Brent Daniel, Enoch Yeung
In this paper we presented a novel constructive approach for training deep neural networks using geometric approaches.
no code implementations • 22 Mar 2018 • Panos Stinis, Tobias Hagge, Alexandre M. Tartakovsky, Enoch Yeung
We suggest ways to enforce given constraints in the output of a Generative Adversarial Network (GAN) generator both for interpolation and extrapolation (prediction).
no code implementations • 8 Dec 2017 • Charles A. Johnson, Enoch Yeung
An outstanding challenge in nonlinear systems theory is identification or learning of a given nonlinear system's Koopman operator directly from data or models.
no code implementations • 6 Oct 2017 • Tobias Hagge, Panos Stinis, Enoch Yeung, Alexandre M. Tartakovsky
We solve a system of ordinary differential equations with an unknown functional form of a sink (reaction rate) term.
no code implementations • 4 Oct 2017 • Zhiyuan Liu, Soumya Kundu, Lijun Chen, Enoch Yeung
In this paper we propose a new Koopman operator approach to the decomposition of nonlinear dynamical systems using Koopman Gramians.
no code implementations • 22 Aug 2017 • Enoch Yeung, Soumya Kundu, Nathan Hodas
The Koopman operator has recently garnered much attention for its value in dynamical systems analysis and data-driven model discovery.