Data Augmentation for Diffusions
Data Augmentation for Diffusions
复制标题
扩散的数据增强
DOI:
10.1080/10618600.2013.783484
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发表时间:
2013
影响因子:
2.4
通讯作者:
Papaspiliopoulos O
中科院分区:
文献类型:
--
作者:
Papaspiliopoulos O
The problem of formal likelihood-based (either classical or Bayesian) inference for discretely observed multidimensional diffusions is particularly challenging. In principle, this involves data augmentation of the observation data to give representations of the entire diffusion trajectory. Most currently proposed methodology splits broadly into two classes: either through the discretization of idealized approaches for the continuous-time diffusion setup or through the use of standard finite-dimensional methodologies discretization of the diffusion model. The connections between these approaches have not been well studied. This article provides a unified framework that brings together these approaches, demonstrating connections, and in some cases surprising differences. As a result, we provide, for the first time, theoretical justification for the various methods of imputing missing data. The inference problems are particularly challenging for irreducible diffusions, and our framework is correspondingly more complex in that case. Therefore, we treat the reducible and irreducible cases differently within the article. Supplementary materials for the article are available online.
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影响因子:
1
作者:
SERMAIDIS G
通讯作者:
SERMAIDIS G
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
E. Gobet;C. Labart
通讯作者:
C. Labart
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
I. Shoji
通讯作者:
I. Shoji
影响因子:
1.4
作者:
B. Delyon;Ying Hu
通讯作者:
Ying Hu
影响因子:
1.8
作者:
Golightly, A.;Wilkinson, D. J.
通讯作者:
Wilkinson, D. J.