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|a (JST)24913885
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|a DE-627
|b ger
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|e rakwb
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|a eng
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|a Porto, Rogério
|e verfasserin
|4 aut
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|a Wavelet shrinkage for regression models with random design and correlated errors
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|c 2016
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|a Text
|b txt
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|a Computermedien
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|a Extraction of a signal in the presence of stochastic noise via wavelet shrinkage has been studied under assumptions that the noise is independent and identically distributed (IID) and that the samples are equispaced (evenly spaced in time). Previous work has relaxed these assumptions either to allow for correlated observations or to allow for random sampling, but very few papers have relaxed both together. In this paper we relax both assumptions by assuming the noise to be a stationary Gaussian process and by assuming a random sampling scheme dictated either by a uniform distribution or by an evenly spaced design subject to jittering. We show that, if the data are treated as if they were autocorrelated and equispaced, the resulting wavelet-based shrinkage estimator achieves an almost optimal convergence rate. We investigate the efficacy of the proposed methodology via simulation studies and illustrate it by the extraction of the light curve for a variable star.
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|a Copyright © 2016 Brazilian Statistical Association
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|a Mathematics
|x Applied mathematics
|x Statistics
|x Error rates
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|a Biological sciences
|x Agriculture
|x Farming
|x Crop production
|x Crop harvesting
|x Manual harvesting
|x Threshing
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|a Mathematics
|x Applied mathematics
|x Statistics
|x Applied statistics
|x Inferential statistics
|x Statistical estimation
|x Estimation methods
|x Estimators
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|a Mathematics
|x Applied mathematics
|x Statistics
|x Applied statistics
|x Descriptive statistics
|x Measures of variability
|x Statistical variance
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|a Applied sciences
|x Engineering
|x Electrical engineering
|x Signal processing
|x Signal noise
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|a Physical sciences
|x Metrology
|x Optical measurement
|x Photometry
|x Light curves
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|a Applied sciences
|x Engineering
|x Electrical engineering
|x Signal processing
|x Autocorrelation
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|a Mathematics
|x Applied mathematics
|x Statistics
|x Applied statistics
|x Descriptive statistics
|x Correlations
|x Correlation analysis
|x Correlation coefficients
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|a Physical sciences
|x Astronomy
|x Astronomical objects
|x Stars
|x Variable stars
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|a Mathematics
|x Pure mathematics
|x Probability theory
|x Random variables
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|a research-article
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|a Morettin, Pedro
|e verfasserin
|4 aut
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|a Percival, Donald
|e verfasserin
|4 aut
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|a Aubin, Elisete
|e verfasserin
|4 aut
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|i Enthalten in
|t Brazilian Journal of Probability and Statistics
|d Brazilian Statistical Association
|g 30(2016), 4, Seite 614-652
|w (DE-627)563175516
|w (DE-600)2422319-0
|x 23176199
|7 nnns
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|g volume:30
|g year:2016
|g number:4
|g pages:614-652
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|u http://www.jstor.org/stable/24913885
|3 Volltext
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|d 30
|j 2016
|e 4
|h 614-652
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