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A Cobb–Douglas type model with stochastic restrictions: Formulation, local influence diagnostics and data analytics in economics
Cysneiros, Francisco José A.; Leiva, Víctor; Liu, Shuangzhe; Marchant-Fuentes, Carolina; Scalco, Paulo (2019)We propose a methodology for modelling and influence diagnostics in a Cobb–Douglas type setting. This methodology is useful for describing case-studies from economics. We consider stochastic restrictions for the model based ...
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Diagnostic analytics for an autoregressive model under the skew-normal distribution
Liu, Yonghui; Mao, Guohua; Leiva, Víctor; Liu, Shuangzhe; Tapia, Alejandra (2020)Autoregressive models have played an important role in time series. In this paper, an autoregressive model based on the skew-normal distribution is considered. The estimation of its parameters is carried out by using the ...
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On a partial least squares regression model for asymmetric data with a chemical application in mining
Huerta, Mauricio; Leiva, Víctor; Liu, Shuangzhe; Rodríguez-Gallardo, Marcelo; Villegas, Danny (2019)In chemometrical applications, covariates in regression models are often correlated, causing a collinearity problem that can be solved by partial least squares (PLS) regression. In addition, high dimensionality in the space ...
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Robust multivariate control charts based on Birnbaum–Saunders distributions
Cysneiros, Francisco José A.; Leiva, Víctor; Marchant-Fuentes, Carolina; Liu, Shuangzhe (2018)Multivariate control charts are powerful and simple visual tools for monitoring the quality of a process. This multivariate monitoring is carried out by considering simultaneously several correlated quality characteristics ...