Wavelet Estimation of a Baseline Signal From Repeated Noisy Measurements by Vertical Block Shrinkage

dc.contributor.author Chang, Woojin
dc.contributor.author Vidakovic, Brani
dc.contributor.corporatename Georgia Institute of Technology. School of Industrial and Systems Engineering
dc.date.accessioned 2008-12-10T16:44:20Z
dc.date.available 2008-12-10T16:44:20Z
dc.date.issued 2001
dc.description.abstract In this paper a new wavelet shrinkage technique is proposed and investigated. When data consist of a multiplicity of related noisy signals, we propose a wavelet-based shrinkage estimation procedure to summarize all data components into a single regularized and representative signal ("base-line"). This fusion of information from different runs is done via Stein-type shrinkage rule resulting from an empirical Bayes argument. The proposed shrinkage estimators maximize the predictive density under appropriate model assumptions on the wavelet coefficients. Features of this model-induced shrinkage are that it is "block-vertical" and local in time. The method, called VERTISHRINK, is evaluated on a battery of test signals under various signal-to-noise ratios and various number of vector components. An application in estimating the base-line signal in an experiment in tumor physiology is provided as well. en
dc.identifier.uri http://hdl.handle.net/1853/25936
dc.language.iso en_US en
dc.publisher Georgia Institute of Technology en
dc.relation.ispartofseries Biomedical Engineering Technical Report ; G04/2001 en
dc.subject Empirical Bayes method en
dc.subject Stein-type estimators en
dc.subject Wavelet shrinkage en
dc.title Wavelet Estimation of a Baseline Signal From Repeated Noisy Measurements by Vertical Block Shrinkage en
dc.type Text
dc.type.genre Technical Report
dspace.entity.type Publication
local.contributor.author Vidakovic, Brani
local.contributor.corporatename Wallace H. Coulter Department of Biomedical Engineering
local.contributor.corporatename College of Engineering
relation.isAuthorOfPublication 1463fd97-3d52-4269-afac-97f6f7f46fcd
relation.isOrgUnitOfPublication da59be3c-3d0a-41da-91b9-ebe2ecc83b66
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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