Screening Covariates in Presence of Unbalanced Binary Dependent Variable
Francesco Giordano (),
Marcella Niglio () and
Marialuisa Restaino ()
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Francesco Giordano: University of Salerno
Marcella Niglio: University of Salerno
A chapter in Mathematical and Statistical Methods for Actuarial Sciences and Finance, 2021, pp 257-263 from Springer
Abstract:
Abstract In this contribution we propose a new method to identify the most relevant covariates in a large dataset that (i) is applicable in presence of regression models where the binary dependent variable is characterized by a very small number of ones than zeros, (ii) is not strongly influenced by the correlation between covariates, (iii) is easily applied when the number of predictors increases up to infinity and/or it is greater than the sample size. The proposed procedure extends the idea of Sure Independence Screening for the linear regression model to the Generalized Extreme Value regression framework. This technique allows to define a set of relevant covariates that survive after applying the screening procedure and that, with a probability tending to one, includes the true relevant covariates. We validate the proposed procedure by a simulation study and an empirical analysis devoted to the prediction of firms failure.
Keywords: GEV; Screening; Variable selection (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-030-78965-7_38
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DOI: 10.1007/978-3-030-78965-7_38
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