GENERALIZED MIXED HEIGHT-DIAMETER MODELS FOR Eucalyptus sp. HEIGHT PREDICTION

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Adriano Ribeiro de Mendonça Samuel de Pádua Chaves e Carvalho Natalino Calegario

Abstract

The purpose of this study was to evaluate the theory of the generalized mixed models and the modeling of the heteroscedasticity of variance in the fit of two nonlinear models for the height-diameter relationship in Eucalyptus sp. Data from sample trees of different genotypes (clone and seed) and ages were used. According to the analysis, the asymptotic model achieved the best results compared to the sigmoid model. The accuracy of the models increased using the theory of mixed effects with the addition of covariates and modeling of the heteroscedasticity of variance.

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How to Cite
MENDONÇA, Adriano Ribeiro de; CARVALHO, Samuel de Pádua Chaves e; CALEGARIO, Natalino. GENERALIZED MIXED HEIGHT-DIAMETER MODELS FOR Eucalyptus sp. HEIGHT PREDICTION. CERNE, [S.l.], v. 21, n. 1, p. 107-115, apr. 2016. ISSN 2317-6342. Available at: <http://cerne.ufla.br/site/index.php/CERNE/article/view/1045>. Date accessed: 23 sep. 2019.
Keywords
Mixed effect, probability models, heteroscedasticity, covariates.
Section
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