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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Performance of asymmetric links and correction methods for imbalanced data in binary regression

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Autor(es):
Huayanay, Alex de la Cruz [1] ; Bazan, Jorge L. [2] ; Cancho, Vicente G. [2] ; Dey, Dipak K. [3]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] USP UFSCar, Interinst Grad Stat, Sao Carlos, SP - Brazil
[2] Univ Sao Paulo, Dept Appl Math & Stat, Sao Carlos, SP - Brazil
[3] Univ Connecticut, Dept Stat, Mansfield, CT - USA
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF STATISTICAL COMPUTATION AND SIMULATION; v. 89, n. 9, p. 1694-1714, JUN 13 2019.
Citações Web of Science: 0
Resumo

In binary regression, imbalanced data result from the presence of values equal to zero (or one) in a proportion that is significantly greater than the corresponding real values of one (or zero). In this work, we evaluate two methods developed to deal with imbalanced data and compare them to the use of asymmetric links. The results based on simulation study show, that correction methods do not adequately correct bias in the estimation of regression coefficients and that the models with power links and reverse power considered produce better results for certain types of imbalanced data. Additionally, we present an application for imbalanced data, identifying the best model among the various ones proposed. The parameters are estimated using a Bayesian approach, considering the Hamiltonian Monte-Carlo method, utilizing the No-U-Turn Sampler algorithm and the comparisons of models were developed using different criteria for model comparison, predictive evaluation and quantile residuals. (AU)

Processo FAPESP: 17/15452-5 - Novos modelos de regressão para dados com resposta binária e/ou limitada
Beneficiário:Jorge Luis Bazan Guzman
Linha de fomento: Bolsas no Exterior - Pesquisa