Non-Stationary Dynamic Mode Decomposition.
Non-Stationary Dynamic Mode Decomposition.
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DOI:
10.1109/access.2023.3326412
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发表时间:
2023
期刊:
影响因子:
3.9
通讯作者:
Fairhall, Adrienne
中科院分区:
文献类型:
--
作者:
Ferre, John;Rokem, Ariel;Buffalo, Elizabeth A.;Kutz, J. Nathan;Fairhall, Adrienne
关键词:
Many physical processes display complex high-dimensional time-varying behavior, from global weather patterns to brain activity. An outstanding challenge is to express high dimensional data in terms of a dynamical model that reveals their spatiotemporal structure. Dynamic Mode Decomposition is a means to achieve this goal, allowing the identification of key spatiotemporal modes through the diagonalization of a finite dimensional approximation of the Koopman operator. However, these methods apply best to time-translationally invariant or stationary data, while in many typical cases, dynamics vary across time and conditions. To capture this temporal evolution, we developed a method, Non-Stationary Dynamic Mode Decomposition, that generalizes Dynamic Mode Decomposition by fitting global modulations of drifting spatiotemporal modes. This method accurately predicts the temporal evolution of modes in simulations and recovers previously known results from simpler methods. To demonstrate its properties, the method is applied to multi-channel recordings from an awake behaving non-human primate performing a cognitive task.
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影响因子:
16.2
作者:
Fries P
通讯作者:
Fries P
DOI:
10.1038/nrn3241
发表时间:
2012-05-18
期刊:
Nature reviews. Neuroscience
影响因子:
--
作者:
Buzsáki G;Anastassiou CA;Koch C
通讯作者:
Koch C
影响因子:
4.8
作者:
Freeman, WJ;Burke, BC;Holmes, MD
通讯作者:
Holmes, MD
DOI:
10.1073/pnas.1302351110
发表时间:
2013-08-06
影响因子:
11.1
作者:
Jutras, Michael J.;Fries, Pascal;Buffalo, Elizabeth A.
通讯作者:
Buffalo, Elizabeth A.
影响因子:
2.4
作者:
Dawson, Scott T. M.;Hemati, Maziar S.;Rowley, Clarence W.
通讯作者:
Rowley, Clarence W.