Registre simple
dc.contributor |
Universitat de Vic. Escola Politècnica Superior |
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dc.contributor |
Universitat de Vic. Grup de Recerca en Bioinformàtica i Estadística Mèdica |
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dc.contributor.author |
Calle, M. Luz
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dc.contributor.author |
Gómez, Guadalupe
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dc.date.accessioned |
2014-05-19T10:20:45Z |
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dc.date.available |
2014-05-19T10:20:45Z |
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dc.date.created |
2001 |
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dc.date.issued |
2001 |
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dc.identifier.citation |
Calle Rosingana, M. L., & Gomez, G. (2001). Nonparametric bayesian estimation from interval-censored data using monte carlo methods. Journal of Statistical Planning and Inference, 98(1-2), 73-87. |
ca_ES |
dc.identifier.issn |
0378-3758 |
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dc.identifier.uri |
http://hdl.handle.net/10854/3057 |
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dc.description.abstract |
We study the estimation of the survival function based on interval-censored data from a
nonparametric Bayesian point of view. Interval censoring arises when the time variable of interest
cannot be directly observed and it is only known to have occurred during a randominterval
of time. Susarla and Van Ryzin (1976) derived the nonparametric Bayesian estimator of the
survival function for right-censored data, based on the class of Dirichlet processes introduced
by Ferguson (1973). The extension of this theory to more complex censoring schemes is in
general not straightforward because the corresponding nonparametric Bayesian estimators are
not obtainable in explicit form. In this work, we propose a methodology that accommodates
Susarla and Van Ryzin estimator to an interval-censoring scheme by using Markov Chain Monte
Carlo methods. The methodology is illustrated with the analysis of the data corresponding to an
AIDS clinical trial. The proposed Bayesian estimator can be interpreted as a way of ‘shrinking’
Turnbull’s nonparametric estimator to a smooth parametric family. A simulation study has been
conducted to illustrate the gain in smoothing as long as the degree of ‘shrinkage’ is bounded as
the sample size grows. |
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dc.format |
application/pdf |
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dc.format.extent |
15 p. |
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dc.language.iso |
eng |
ca_ES |
dc.publisher |
Elsevier |
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dc.rights |
(c) 2001 Elsevier. Published article is available at: http://dx.doi.org/10.1016/S0378-3758(00)00320-7 |
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dc.rights |
Tots els drets reservats |
ca_ES |
dc.subject.other |
Anàlisi de supervivència (Estadística) |
ca_ES |
dc.subject.other |
Estadística bayesiana |
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dc.title |
Nonparametric Bayesian estimation from interval-censored data using Monte Carlo methods |
ca_ES |
dc.type |
info:eu-repo/semantics/article |
ca_ES |
dc.identifier.doi |
https://doi.org/10.1016/S0378-3758(00)00320-7 |
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dc.relation.publisherversion |
http://www.sciencedirect.com/science/article/pii/S0378375800003207 |
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dc.rights.accessRights |
info:eu-repo/semantics/closedAccess |
ca_ES |
dc.type.version |
info:eu-repo/publishedVersion |
ca_ES |
dc.indexacio |
Indexat a WOS/JCR |
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Registre simple