Can any multivariate gaussian vector be interpreted as a sample from a stationary random process?

被引:5
|
作者
Perrin, Olivier
Schlather, Martin
机构
[1] Univ Toulouse 1, GREMAQ, F-31000 Toulouse, France
[2] Univ Toulouse 1, LERNA, F-31000 Toulouse, France
[3] Univ Gottingen, Inst Math Stochast, D-37073 Gottingen, Germany
关键词
gram matrix; positive definite function; positive semi-definite matrix; stationarity on graphs;
D O I
10.1016/j.spl.2006.12.005
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
We show that a Gaussian random vector can always be interpreted as a sample from a stationary random function on a graph in R-d, d >= 2, provided that the expectations are the same for all components and the covariance matrix has identical components on the diagonal. (C) 2007 Elsevier B.V. All rights reserved.
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页码:881 / 884
页数:4
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