Issue |
ESAIM: PS
Volume 3, 1999
|
|
---|---|---|
Page(s) | 23 - 47 | |
DOI | https://doi.org/10.1051/ps:1999101 | |
Published online | 15 August 2002 |
Efficient estimation of functionals of the spectral density of stationary Gaussian fields
Departamento de Matemáticas, IVIC, Caracas, Venezuela;
cludena@ivic.ivic.ve.
Received:
7
June
1996
Revised:
17
September
1998
Minimax bounds for the risk function of estimators of functionals of the spectral density of Gaussian fields are obtained. This result is a generalization of a previous result of Khas'minskii and Ibragimov on Gaussian processes. Efficient estimators are then constructed for these functionals. In the case of linear functionals these estimators are given for all dimensions. For non-linear integral functionals, these estimators are constructed for the two and three dimensional problems.
Résumé
Nous considérons le problème d'estimation d'une fonctionnelle de la densité spectrale d'un champ gaussien. Nous établissons tout d'abord des bornes inférieures asymptotiques pour le risque minimax. Dans le cas des champs de dimension 2 ou 3, nous construisons ensuite des estimateurs efficaces, c'est à dire atteignant asymptotiquement ces bornes inférieures, pour des fonctionnelles linéaires et des fonctionnelles intégrales non linéaires de la densité spectrale.
Mathematics Subject Classification: 62G05 / 62M40 / 62M15
Key words: Efficient estimation / Gaussian fields / periodogram / tapered periodogram / spectral density / Toeplitz matrices.
© EDP Sciences, SMAI, 1999
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.