2013
DOI: 10.1175/mwr-d-11-00296.1
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Data Assimilation with Gaussian Mixture Models Using the Dynamically Orthogonal Field Equations. Part II: Applications

Abstract: The properties and capabilities of the GMM-DO filter are assessed and exemplified by applications to two dynamical systems: (1) the Double Well Diffusion and (2) Sudden Expansion flows; both of which admit far-from-Gaussian statistics. The former test case, or twin experiment, validates the use of the EM algorithm and Bayesian Information Criterion with Gaussian Mixture Models in a filtering context; the latter further exemplifies its ability to efficiently handle state vectors of non-trivial dimensionality an… Show more

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Cited by 32 publications
(26 citation statements)
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“…Gaussian Mixture Model (GMM) has been used successfully in many fields including sound recognition [15], tracking dynamical systems [16][17][18], text recognition [19] forecasting [20]. However, its application in the AE community has been modest [6].…”
Section: Gaussian Mixture Modelingmentioning
confidence: 99%
“…Gaussian Mixture Model (GMM) has been used successfully in many fields including sound recognition [15], tracking dynamical systems [16][17][18], text recognition [19] forecasting [20]. However, its application in the AE community has been modest [6].…”
Section: Gaussian Mixture Modelingmentioning
confidence: 99%
“…An important property of GMMs is that they are conjugate priors to the commonly used Gaussian observation models: their Bayesian update then remains a Gaussian mixture (Casella and Berger 2001;Sondergaard 2011). Specifically, for a prior multivariate GMM,…”
Section: A Gaussian Mixture Modelsmentioning
confidence: 99%
“…A derivation of this optimum M is given in Sondergaard (2011). In summary, Laplace's approximation is applied to the left hand of side of Bayes' Law (MacKay 2003),…”
Section: The Bayesian Information Criterionmentioning
confidence: 99%
See 1 more Smart Citation
“…ESSE has components of time-varying basis functions, multi-scale initializations, and stochastic ensemble predictions. ESSE was later combined with principled filtering techniques to derive the GMM-DO filter, a general data-assimilation technique [13]. Both ESSE and GMM-DO require knowledge of the approximate governing equations for the time-evolving error covariance bases, which is not the case for our approach.…”
Section: Related Workmentioning
confidence: 99%