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    題名: A Profile Likelihood Theory for the Correlated Gamma-Frailty Model with Current Status Family Data
    作者: Chang, I-shou;Wen, Chi-chung;Wu, Yuh-jenn
    貢獻者: 淡江大學數學學系
    關鍵詞: Current status family data;least favorable submodel;likeli-hood ratio statistic;nonparametric maximum likelihood estimate;profile likelihood
    日期: 2007-07
    上傳時間: 2011-05-20 09:42:54 (UTC+8)
    出版者: Statistica Sinica
    摘要: A profile likelihood inference is made for the regression coefficient and frailty parameters in the correlated gamma-frailty model for current status family data. With the introduction of an identifiability assumption, the identifiability of the parameters and the existence of the nonparametric maximum likelihood estimate (NPMLE) are established, the consistency and convergence rate of the NPMLE are obtained, the invertibility of the efficient Fisher information matrix is proved, and a quadratic expansion of the profile likelihood is established. From these, we show that the NPMLE of the parameters of interest is asymptotically normal and efficient, its covariance matrix can be estimated consistently by means of the profile likelihood, and the likelihood ratio test is asymptotically chi-squared. A simulation study is carried out to illustrate the numerical performance of the likelihood ratio test.
    關聯: Statistica Sinica 17(3), pp.1023-1046
    DOI: 
    顯示於類別:[數學學系暨研究所] 期刊論文

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