Resampling
Mostrando 13-24 de 70 artigos, teses e dissertações.
-
13. Repeatability of some phenotypic stability parameters - a resampling approach
Abstract The aim of this study was to estimate the repeatability of some phenotypic stability parameters: reliability index (I), regression coefficient (b 0 e b 1 ), ecovalence, and the mean of the absolute scores (MAS),and to check the implications of estimating stability parameters using a reduced number of environments. A data set comprising 25 common b
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-04
-
14. The Long-Range Memory and the Fractal Dimension: a Case Study for Alcântara
ABSTRACT: This study aimed to analyze the time series behavior of the Southern Oscillation Index through techniques using Fast Fourier Transform, computing the autocorrelation function, and the calculation of the Hurst coefficient. The methodology of Hurst Exponent calculation uses different lags, which are computed in the time series of Southern Oscillation
J. Aerosp. Technol. Manag.. Publicado em: 24/08/2017
-
15. Comparison of beat cloth and entomological net methods for determining faunistic indices of soybean in Rio Grande do Sul, Brazil
ABSTRACT Estimates of diversity indices provide information on distribution, richness and abundance of species within a community. The aim of the current study was to estimate faunistic indices (richness, constancy, dominance and abundance) of the species collected by beat cloth and entomological net sampling methods in different soybean crops and to determi
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-12
-
16. Comparison of conventional Papanicolaou cytology samples with liquid-based cervical cytology samples from women in Pernambuco, Brazil
In the present study, we compared the performance of a ThinPrep cytological method with the conventional Papanicolaou test for diagnosis of cytopathological changes, with regard to unsatisfactory results achieved at the Central Public Health Laboratory of the State of Pernambuco. A population-based, cross-sectional study was performed with women aged 18 to 6
Braz J Med Biol Res. Publicado em: 31/07/2015
-
17. Genetic divergence among cupuaçu accessions by multiscale bootstrap resampling
This study aimed at investigating the genetic divergence of eighteen accessions of cupuaçu trees based on fruit morphometric traits and comparing usual methods of cluster analysis with the proposed multiscale bootstrap resampling methodology. The data were obtained from an experiment conducted in Tomé-Açu city (PA, Brazil), arranged in a completely random
Bragantia. Publicado em: 29/04/2015
-
18. Utilização de técnicas multivariadas na análise da divergência genética via modelo AMMI com reamostragem \"bootstrap\" / Use of multivariate techniques in the analysis of genetic diversity through ammi model with bootstrap resampling
Em estudos de divergência genética por métodos multivariados, a distância euclidiana é a medida de distância mais amplamente utilizada e essa distância é a mais recomendada quando as unidades de cálculos são escores de componentes principais, como é o caso da análise AMMI (additive main effects and multiplicative interaction analysis). Tal análi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/10/2012
-
19. Algoritmo de aprendizado supervisionado - baseado em máquinas de vetores de suporte - uma contribuição para o reconhecimento de dados desbalanceados / Supervised learning Algorithm - Based on Support Vector Machines - A Contribution to the Recognition of Unbalanced Data
The machine learning in datasets that have unbalanced classes, has received considerable attention in the scientific community, because the traditional classification algorithms dont provide a satisfactory performance. This low performance can be explained by the fact that the traditional techniques of machine learning consider that each class present in the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/09/2011
-
20. Phenotypic stability via ammi model with bootstrap re-sampling.
2007
Pesquisa Florestal Brasileira. Publicado em: 2011
-
21. Avaliação de desempenho no georreferenciamento de imagens do sensor HR CCD (High Resolution Charge-Coupled Device) do Satélite CBERS-1
In this work it was analyzed the validation of CBERS-1 (China and Brazillian Earth Resourses Satellite) data related to qualitative and quantitative parameters that define the precision of its georeferencing. A topographical survey was carried out for the acquisition of ground control points spatially well distributed in the study area, employing differentia
Publicado em: 2011
-
22. Inter-trait relations for direct and indirect selection in coffee.
The purpose of this study was to verify the possibility of using direct selection in nine traits underlying indirect selection for yield and determine which traits should participate in the selection process. Data of 40 Conilon coffee genotypes were analyzed in two experiments in the growing seasons of 1996, 1998, 1999, 2000 and 2001 in random blocks with fo
CROP BREEDING AND APPLIED BIOTECHNOLOGY. Publicado em: 2011
-
23. Inter-trait relations for direct and indirect selection in coffee.
The purpose of this study was to verify the possibility of using direct selection in nine traits underlying indirect selection for yield and determine which traits should participate in the selection process. Data of 40 Conilon coffee genotypes were analyzed in two experiments in the growing seasons of 1996, 1998, 1999, 2000 and 2001 in random blocks with fo
CROP BREEDING AND APPLIED BIOTECHNOLOGY. Publicado em: 2011
-
24. Métodos de reamostragem de séries temporais baseados em wavelets. / Resampling methods for time series based on wavelets.
This paper reviews resampling methods based on wavelets as an alternative to the classic approaches which are, made in the time and frequency domains. These methods, known in the literature as wavestrap and wavestrapping, make use, respectively, of the discrete wavelet transform (DWT) and of the discrete wavelet packet transform (DWPT). Since only few result
Publicado em: 2010