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›› 2020, Vol. 37 ›› Issue (5): 582-592.DOI: 10.7523/j.issn.2095-6134.2020.05.002

• Research Articles • Previous Articles     Next Articles

Breakdown point of penalized logistic regression

DONG Yulin, GUO Xiao   

  1. International Institute of Finance, School of Management, University of Science and Technology of China, Hefei 230026, China
  • Received:2018-11-19 Revised:2019-04-10 Online:2020-09-15
  • Supported by:
    Supported by the Fundamental Research Funds for the Central Universities and the National Natural Science Foundation of China (11601500,11671374,11771418)

Abstract: Breakdown point is regarded as an important measure of robustness in regression analysis. At the same time, sparse model estimation is a hot topic in data analysis. In the case of less attention to the breakdown point of robust estimates in nonlinear models, we study it in binary response models. We prove that the penalized estimate of logistic models always stays bounded, which means the finite explosive breakdown point of it is 1. Moreover, we give an upper bound of the implosive breakdown point of the slope parameter. Both simulation study and real data application verify this point while we use the approximation method and coordinate descent algorithm.

 

Key words: breakdown point, logistic regression, maximum likelihood estimator, penalization, robust estimation

CLC Number: