Paper Info
Title
An MCMC Algorithm for Parameter Estimation in Signals with Hidden Intermittent Instability
Abstract
Prediction of extreme events is a highly important and challenging problem in science, engineering, finance, and many other areas. The observed extreme events in these areas are often associated with complex nonlinear dynamics with intermittent instability. However, due to lack of resolution or incomplete knowledge of the dynamics of nature, these instabilities are typically hidden. To describe nature with hidden instability, a stochastic parameterized model is used as the low-order reduced model. Bayesian inference incorporating data augmentation, regarding the missing path of the hidden processes as the augmented variables, is adopted in a Markov chain Monte Carlo (MCMC) algorithm to estimate the parameters in this reduced model from the partially observed signal. Howerver, direct application of this algorithm leads to an extremely low acceptance rate of the missing path. To overcome this shortcoming, an efficient MCMC algorithm which includes a pre-estimation of hidden processes is developed. This algorithm greatly increases the acceptance rate and provides the low-order reduced model with a high skill in capturing the extreme events due to intermittency.
Year
DOI
Venue
2014
10.1137/130944977
SIAM-ASA JOURNAL ON UNCERTAINTY QUANTIFICATION
Keywords
Field
DocType
hidden process,intermittency,stochastic parameterized model,data augmentation,MCMC algorithm,prediction skill
Parameterized complexity,Nonlinear system,Bayesian inference,Forward algorithm,Markov chain Monte Carlo,Algorithm,Intermittency,Estimation theory,Mathematics,Hidden semi-Markov model
Journal
Volume
Issue
ISSN
2
1
2166-2525
Citations 
PageRank 
References 
2
0.36
6
Authors
4
Name
Order
Citations
PageRank
nan chen120.36
Dimitrios Giannakis252.60
Radu Herbei321.03
Andrew J. Majda46123.70