2018
DOI: 10.1038/s41467-018-04241-5
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Bayesian model selection for complex dynamic systems

Abstract: Time series generated by complex systems like financial markets and the earth’s atmosphere often represent superstatistical random walks: on short time scales, the data follow a simple low-level model, but the model parameters are not constant and can fluctuate on longer time scales according to a high-level model. While the low-level model is often dictated by the type of the data, the high-level model, which describes how the parameters change, is unknown in most cases. Here we present a computationally effi… Show more

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Cited by 58 publications
(57 citation statements)
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References 70 publications
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“…Also other definitions of the entropy could be investigated. It should also be mentioned that, when possible, the performance of the proposed indicators could be compared with complementary Bayesian model selection approaches [20,21].…”
Section: Discussionmentioning
confidence: 99%
“…Also other definitions of the entropy could be investigated. It should also be mentioned that, when possible, the performance of the proposed indicators could be compared with complementary Bayesian model selection approaches [20,21].…”
Section: Discussionmentioning
confidence: 99%
“…In addition, a more general framework that aggregates all the displaced stations and all the effective time lags would be of great significance in improving the predictive power for extreme air pollution events. Since more stations and time lags mean more complexity which might add some fixed or random effects of the model and reduce the predictive power, a Bayesian updating scheme similar to looking one step back with spatial aggregation over multiple stations might help 15 .…”
Section: Discussionmentioning
confidence: 99%
“…However, we steer the wheel to another direction which focuses on the ARMA structure and spatial explanatory power. It’s worth to mention that Beck and Cohen put forward a two-compound superstatistical model to model multiple fragments characterized by the exponential inter-session time distribution, which has been widely used in complex systems for risk estimation 11 15 .…”
Section: Introductionmentioning
confidence: 99%
“…Two approaches are used to infer time‐varying parameters and determine their uncertainty. The first is the Monte Carlo methods that approximate the distribution of parameters based on random sampling 12 . The second is variational Bayer techniques that approximate parameters using analytical distributions.…”
Section: Superstatisticsmentioning
confidence: 99%