Bayesian Estimators
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Análise espacial dos óbitos infantis evitáveis no Espírito Santo, Brasil, 2006-2013
Resumo Objetivo: analisar a distribuição espacial dos óbitos infantis evitáveis, de 2006 a 2013, no Espírito Santo, Brasil. Métodos: estudo ecológico dos óbitos infantis registrados no Sistema de Informação sobre Mortalidade (SIM) e classificados segundo o método International Colaborative Effort (ICE) on Infant Mortality. As taxas de óbitos ev
Epidemiol. Serv. Saúde. Publicado em: 09/09/2019
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2. Improved Bayes estimators and prediction for the Wilson-Hilferty distribution
Abstract: In this paper, we revisit the Wilson-Hilferty distribution and presented its mathematical properties such as the r-th moments and reliability properties. The parameters estimators are discussed using objective reference Bayesian analysis for both complete and censored data where the resulting marginal posterior intervals have accurate frequentist c
An. Acad. Bras. Ciênc.. Publicado em: 19/08/2019
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3. Aerial biomass allometric models for Prosopis affinis Spreng. in native Espinal forests of Argentina
RESUMO A estimativa do carbono armazenado nos ecossistemas florestais requer ferramentas precisas para prever a biomassa. Objetivou-se nesse estudo determinar a biomassa aérea individual de Prosopis affinis e sua distribuição por componente; desenvolver modelos alométricos para prever a biomassa, e estimar os fatores de expansão da biomassa (FEB) em flo
Rev. bras. eng. agríc. ambient.. Publicado em: 01/07/2019
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4. SOME COMPUTATIONAL ASPECTS TO FIND ACCURATE ESTIMATES FOR THE PARAMETERS OF THE GENERALIZED GAMMA DISTRIBUTION
ABSTRACT In this paper, we discuss computational aspects to obtain accurate inferences for the parameters of the generalized gamma (GG) distribution. Usually, the solution of the maximum likelihood estimators (MLE) for the GG distribution have no stable behavior depending on large sample sizes and good initial values to be used in the iterative numerical alg
Pesqui. Oper.. Publicado em: 2017-08
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5. Uma priori beta para distribuição binomial negativa.
Nesta dissertação está sendo abordado uma distribuição discreta baseada em ensaios de Bernoulli, que é a distribuição Binomial Negativa. O objetivo principal é prôpor uma nova distribuição a priori não informativa para o modelo Binomial Negativa, que está sendo denominado como uma possível distribuição a priori Beta(0; 0), que é uma distrib
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011
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6. Novas propostas em filtragem de projeções tomográficas sob ruído Poisson
In this dissertation we present techniques for filtering of tomographic projections with Poisson noise. For the filtering of the tomogram projections we use variations of three filtering techniques: Bayesian estimation, Wiener filtering and thresholding in Wavelet domain. We used ten MAP estimators, each estimator with a diferent probability density as prior
Publicado em: 2010
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7. Combinação de modelos de campos aleatórios markovianos para classificação contextual de imagens multiespectrais / Combining markov random field models for multispectral image contextual classification
This work presents a novel MAP-MRF approach for multispectral image contextual classification by combining higher-order Markov Random Field models. The statistical modeling follows the Bayesian paradigm, with the definition of a multispectral Gaussian Markov Random Field model for the observations and a Potts MRF model to represent the a priori knowledge. In
Publicado em: 2010
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8. Bayesian and maximum likelihood estimation of SIR stochastic models / Estimação bayesiana e por maxima verossimilhança de modelos SIR estocasticos
Compartmental models have been widely used in order to model epidemics. Several methods have been proposed in the literature to estimate the models, specially, the least squares method, maximum likelihood estimation and Bayes estimators based on Monte Carlo simulation. In the most of real cases, the data are only partially observable. The work considers the
Publicado em: 2009
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9. ANÁLISE ESPACIAL DA MORTALIDADE POR DOENÇAS DO APARELHO CIRCULATÓRIO NAS REGIÕES URBANAS DE JUIZ DE FORA - MG
The cardiovascular diseases (CVD) are the main causes of death in Juiz de Fora, in Brazil and in most countries. The spatial distribution of CVD mortality in large cities is not homogeneous: regions with worse social conditions have bigger mortality rates. Premature CVD mortality is also related to socioeconomic conditions of neighborhood. The techniques of
Publicado em: 2009
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10. Estimação de dados em ambiente CDMA usando o conformador de Feixes Bayesiano / CDMA data estimation using the bayesian beamformer
The increasing demand for mobile communications services without a corresponding increase in spectrum allocation has motivated the development of new techniques to improve spectrum utilization. The Code Division Multiple Access (CDMA) and adaptive antenna array are two approaches that show real promise for increasing spectrum efficiency. Initially, a study a
Publicado em: 2006
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11. Uma abordagem Bayesiana para análise de sobrevivência de clones de eucaliptos no pólo gesseiro do Araripe-PE
Aiming at to contribute, as alternative to minimize the resources of impacts,mainly, for the search of combustible material to take care of the energy demand of the Brazilian half-barren region, we use the techniques of analysis of survival for understanding of a forest of eucalyptus to the long one of the time, and with this to ration the use wooden as comb
Publicado em: 2006
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12. Meta-análise de parâmetros genéticos de características de crescimento em bovinos de corte sob enfoques clássico e Bayesiano. / Meta-analysis of genetic parameters of growth traits on beef cattle under classic and bayesian approach.
The increasing volume of research publications as a consequence of scientific development and eventually with divergent conclusions obtained in different studies about the same subject are the two main motivations for compiling the information of these works. Statistical procedures, particularly the meta-analysis, were developed in order to obtain a unique a
Publicado em: 2004