A new copula-based bivariate Gompertz--Makeham model and its application to COVID-۱۹ mortality data

سال انتشار: 1402
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 96

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شناسه ملی سند علمی:

JR_IJFS-20-3_011

تاریخ نمایه سازی: 2 خرداد 1402

چکیده مقاله:

One of the useful distributions in modeling mortality (or failure) data is the univariate Gompertz--Makeham distribution. To examine the relationship between the two variables, the extended bivariate Gompertz--Makeham distribution is introduced, and its properties are provided. Also, some reliability indices, including aging intensity and stress-strength reliability, are calculated for the proposed model. Here, a new copula function is constructed based on the extended bivariate Gompertz--Makeham  distribution. Some of its features including dependency properties, such as dependence structure, some  measures of dependence, and tail dependence,  are studied.The estimation of the  parameters of new copula is presented, and at the end, a simulation study and a performance analysis based on the real data are presented.  So, by analyzing the mortality data due to COVID-۱۹, the appropriateness of the proposed model is examined.

نویسندگان

M. Esfahani

Department of Statistics, Faculty of Mathematical Sciences, Ferdowsi University of Mashhad, Iran

M. Amini

Department of Statistics, Faculty of Mathematical Sciences, Ferdowsi University of Mashhad, Iran

G. R. Mohtashami-Borzadaran

Department of Statistics, Faculty of Mathematical Sciences, Ferdowsi University of Mashhad, Iran

A. Dolati

Department of Statistics, Faculty of Mathematical Sciences, Ferdowsi University of Mashhad, Iran

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