Approximate Inference for Observation-Driven Time Series Models with Intractable Likelihoods
Approximate Inference for Observation-Driven Time Series Models with Intractable Likelihoods
复制标题
具有棘手似然性的观测驱动时间序列模型的近似推理
DOI:
10.1145/2592254
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发表时间:
2014
影响因子:
0.9
通讯作者:
Jasra A
中科院分区:
文献类型:
--
作者:
Jasra A
In this article, we consider approximate Bayesian parameter inference for observation-driven time series models. Such statistical models appear in a wide variety of applications, including econometrics and applied mathematics. This article considers the scenario where the likelihood function cannot be evaluated pointwise; in such cases, one cannot perform exact statistical inference, including parameter estimation, which often requires advanced computational algorithms, such as Markov Chain Monte Carlo (MCMC). We introduce a new approximation based upon Approximate Bayesian Computation (ABC). Under some conditions, we show that asn→ ∞, withnthe length of the time series, the ABC posterior has, almost surely, a Maximum A Posteriori (MAP) estimator of the parameters that is often different from the true parameter. However, a noisy ABC MAP, which perturbs the original data, asymptotically converges to the true parameter, almost surely. In order to draw statistical inference, for the ABC approximation adopted, standard MCMC algorithms can have acceptance probabilities that fall at an exponential rate innand slightly more advanced algorithms can mix poorly. We develop a new and improved MCMC kernel, which is based upon an exact approximation of a marginal algorithm, whose cost per iteration is random, but the expected cost, for good performance, is shown to beO(n2) per iteration. We implement our new MCMC kernel for parameter inference from models in econometrics.
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DOI:
10.1214/14-aap1022
发表时间:
2015
期刊:
The Annals of Applied Probability
影响因子:
--
作者:
Andrieu C
通讯作者:
Andrieu C
DOI:
10.1080/01621459.2013.864178
发表时间:
2014-03-01
影响因子:
3.7
作者:
Barthelme, Simon;Chopin, Nicolas
通讯作者:
Chopin, Nicolas
影响因子:
1.2
作者:
S. Zacks
通讯作者:
S. Zacks
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
A. Golightly;D. Wilkinson
通讯作者:
D. Wilkinson
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
Anthony Lee;Krzysztof Latuszynski
通讯作者:
Krzysztof Latuszynski