Statistics for tail processes of Markov chains
Statistics for tail processes of Markov chains
复制标题
马尔可夫链尾部过程统计
DOI:
10.1007/s10687-015-0217-1
复制
发表时间:
2015
期刊:
影响因子:
1.3
通讯作者:
Warchoł
中科院分区:
文献类型:
--
作者:
Segers;Warchoł
At high levels, the asymptotic distribution of a stationary, regularly varying Markov chain is conveniently given by its tail process. The latter takes the form of a geometric random walk, the increment distribution depending on the sign of the process at the current state and on the flow of time, either forward or backward. Estimation of the tail process provides a nonparametric approach to analyze extreme values. A duality between the distributions of the forward and backward increments provides additional information that can be exploited in the construction of more efficient estimators. The large-sample distribution of such estimators is derived via empirical process theory for cluster functionals. Their finite-sample performance is evaluated via Monte Carlo simulations involving copula-based Markov models and solutions to stochastic recurrence equations. The estimators are applied to stock price data to study the absence or presence of symmetries in the succession of large gains and losses.
登录
查看更多内容
影响因子:
1.4
作者:
R. Davis;T. Mikosch;Yuwei Zhao
通讯作者:
R. Davis;T. Mikosch;Yuwei Zhao
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
J. Segers
通讯作者:
J. Segers
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
R. Bowman;D. Iverson
通讯作者:
D. Iverson
影响因子:
1.5
作者:
Janssen, Anja;Drees, Holger
通讯作者:
Drees, Holger
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
Martin Larsson;S. Resnick
通讯作者:
S. Resnick