Robust Surveillance of Covariance Matrices Using a Single Observation
Robust Surveillance of Covariance Matrices Using a Single Observation
复制标题
使用单个观测值对协方差矩阵进行稳健监视
DOI:
10.1007/s13171-013-0044-x
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Y. Okhrin
中科院分区:
文献类型:
--
作者:
Bodnar;Bodnar;Y. Okhrin
In this paper a new technique for monitoring shifts in covariance matrices of Gaussian processes is developed. The processes we monitor are obtained from the covariance matrices estimated using a single observation. These processes follow independent Gaussian distribution in the in-control state, thus allowing for application of standard control charts. Furthermore, in contrary to the existing literature, the suggested procedure is asymptotically robust to the shifts in the mean. The explicit out-of-control distribution for an arbitrary moment of the shift is derived. The performance of numerous multivariate control charts is evaluated in an extensive simulation study and applied to monitoring volatilities on financial markets.
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DOI:
--
发表时间:
2003
期刊:
International Encyclopedia of Statistical Science
影响因子:
--
作者:
M. Frisén
通讯作者:
M. Frisén
影响因子:
1.6
作者:
Bodnar, Taras;Okhrin, Yarema
通讯作者:
Okhrin, Yarema
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
M. Morais;A. Pacheco
通讯作者:
A. Pacheco
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
H. Kramer;W. Schmid
通讯作者:
W. Schmid
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
Vasyl Golosnoy;Iryna Okhrin;S. Ragulin;W. Schmid
通讯作者:
W. Schmid