Arid
DOI10.1023/A:1020910605990
Zero-inflated models with application to spatial count data
Agarwal, DK; Gelfand, AE; Citron-Pousty, S
通讯作者Agarwal, DK
来源期刊ENVIRONMENTAL AND ECOLOGICAL STATISTICS
ISSN1352-8505
出版年2002
卷号9期号:4页码:341-355
英文摘要

Count data arises in many contexts. Here our concern is with spatial data which exhibit an excessive number of zeros. Using the class of zero-inflated count models provides a flexible way to address this problem. Available covariate information suggests formulation of such modeling within a regression framework. We employ zero-inflated Poisson regression models. Spatial association is introduced through suitable random effects yielding a hierarchical model. We propose fitting this model within a Bayesian framework considering issues of posterior propriety, informative prior specification and well-behaved simulation based model fitting. Finally, we illustrate the model fitting with a data set involving counts of isopod nest burrows for 1649 pixels over a portion of the Negev desert in Israel.


英文关键词conditionally autoregressive prior Langevin diffusions latent variables posterior propriety
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000179090800002
WOS关键词ISOPOD HEMILEPISTUS-REAUMURI ; REGRESSION ; SYSTEMS
WOS类目Environmental Sciences ; Mathematics, Interdisciplinary Applications ; Statistics & Probability
WOS研究方向Environmental Sciences & Ecology ; Mathematics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/142525
作者单位(1)AT&T Labs Res, Shannon Res Labs, Florham Pk, NJ 07932 USA;(2)Duke Univ, Inst Stat & Decis Sci, Durham, NC 27708 USA;(3)Univ Connecticut, Dept Ecol & Evolutionary Biol, Storrs, CT 06269 USA
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Agarwal, DK,Gelfand, AE,Citron-Pousty, S. Zero-inflated models with application to spatial count data[J],2002,9(4):341-355.
APA Agarwal, DK,Gelfand, AE,&Citron-Pousty, S.(2002).Zero-inflated models with application to spatial count data.ENVIRONMENTAL AND ECOLOGICAL STATISTICS,9(4),341-355.
MLA Agarwal, DK,et al."Zero-inflated models with application to spatial count data".ENVIRONMENTAL AND ECOLOGICAL STATISTICS 9.4(2002):341-355.
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