Change point estimation in high dimensional Markov random-field models.
Change point estimation in high dimensional Markov random-field models.
复制标题
高维马尔可夫随机场模型中的变更点估计。
DOI:
10.1111/rssb.12205
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发表时间:
2017-09
期刊:
影响因子:
--
通讯作者:
Michailidis G
中科院分区:
文献类型:
--
作者:
Roy S;Atchadé Y;Michailidis G
This paper investigates a change-point estimation problem in the context of high-dimensional Markov random field models. Change-points represent a key feature in many dynamically evolving network structures. The change-point estimate is obtained by maximizing a profile penalized pseudo-likelihood function under a sparsity assumption. We also derive a tight bound for the estimate, up to a logarithmic factor, even in settings where the number of possible edges in the network far exceeds the sample size. The performance of the proposed estimator is evaluated on synthetic data sets and is also used to explore voting patterns in the US Senate in the 1979-2012 period.
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