Cressie–Read Power‐Divergence Statistics for Non‐Gaussian Vector Stationary Processes

Hiroaki Ogata and Masanobu Taniguchi

Scandinavian Journal of Statistics, 2009, vol. 36, issue 1, 141-156

Abstract: Abstract. For a class of vector‐valued non‐Gaussian stationary processes, we develop the Cressie–Read power‐divergence (CR) statistic approach which has been proposed for the i.i.d. case. The CR statistic includes empirical likelihood as a special case. Therefore, by adopting this CR statistic approach, the theory of estimation and testing based on empirical likelihood is greatly extended. We use an extended Whittle likelihood as score function and derive the asymptotic distribution of the CR statistic. We apply this result to estimation of autocorrelation and the AR coefficient, and get narrower confidence intervals than those obtained by existing methods. We also consider the power properties of the test based on asymptotic theory. Under a sequence of contiguous local alternatives, we derive the asymptotic distribution of the CR statistic. The problem of testing autocorrelation is discussed and we introduce some interesting properties of the local power.

Date: 2009
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https://doi.org/10.1111/j.1467-9469.2008.00618.x

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Persistent link: https://EconPapers.repec.org/RePEc:bla:scjsta:v:36:y:2009:i:1:p:141-156

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