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19932026
most citedA Data-Driven Approximation of the Koopman Operator: Extending Dynamic Mode Decomposition

1.9k citations · 6.2k across the 179 of their papers we have counts for

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11 papers · 1 filter

nlin.AO2020★ 2 cited

Learning emergent PDEs in a learned emergent space

Felix P. Kemeth, Tom Bertalan, Thomas Thiem +4

We extract data-driven, intrinsic spatial coordinates from observations of the dynamics of large systems of coupled heterogeneous agents. These coordinates then serve as an emergen…

nlin.AO2020

Emergent spaces for coupled oscillators

Thomas N. Thiem, Mahdi Kooshkbaghi, Tom Bertalan +2

In this paper we present a systematic, data-driven approach to discovering "bespoke" coarse variables based on manifold learning algorithms. We illustrate this methodology with the…

nlin.AO2016★ 8 cited

Dimension reduction in heterogeneous neural networks: generalized Polynomial Chaos (gPC) and ANalysis-Of-VAriance (ANOVA)

Minseok Choi, Tom Bertalan, Carlo R. Laing +1

We propose, and illustrate via a neural network example, two different approaches to coarse-graining large heterogeneous networks. Both approaches are inspired from, and use tools…

nlin.AO2015

Modeling Heterogeneity in Networks using Uncertainty Quantification Tools

Karthikeyan Rajendran, Andreas C. Tsoumanis, Constantinos I. Siettos +2

Using the dynamics of information propagation on a network as our illustrative example, we present and discuss a systematic approach to quantifying heterogeneity and its propagatio…

nlin.AO2014

Coarse graining, dynamic renormalization and the kinetic theory of shock clustering

Xingjie Li, Matthew O. Williams, Ioannis G. Kevrekidis +1

We demonstrate the utility of the equation free methodology developed by one of the authors (I.G.K) for the study of scalar conservation laws with disordered initial conditions. Th…

nlin.AO2007★ 89 cited

Robust oscillations in SIS epidemics on adaptive networks: Coarse-graining by automated moment closure

Thilo Gross, Ioannis G. Kevrekidis

We investigate the dynamics of an epidemiological susceptible-infected-susceptible (SIS) model on an adaptive network. This model combines epidemic spreading (dynamics on the netwo…