Abstract
In this paper we investigate various third-order asymptotic properties of maximum likelihood estimators for Gaussian ARMA processes by the third-order Edgeworth expansions of the sampling distributions. We define a third-order asymptotic efficiency by the highest probability concentration around the true value with respect to the third-order Edgeworth expansion. Then we show that the maximum likelihood estimator is not always third-order asymptotically efficient in the class A3 of third-order asymptotically median unbiased estimators. But, if we confine our discussions to an appropriate class D (⊂ A3) of estimators, we can show that appropriately modified maximum likelihood estimator is always third-order asymptotically efficient in D.
Original language | English |
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Pages (from-to) | 1-31 |
Number of pages | 31 |
Journal | Journal of Multivariate Analysis |
Volume | 18 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1986 Feb |
Externally published | Yes |
Keywords
- Edgeworth expansion
- Gaussian autoregressive moving average processes
- Toeplitz matrix
- maximum likelihood estimator
- residue theorem
- spectral density
- third order asymptotic efficiency
ASJC Scopus subject areas
- Statistics and Probability
- Numerical Analysis
- Statistics, Probability and Uncertainty