Title
Inference for constant-stress Weibull competing risks model under generalized progressive hybrid censoring
Abstract
In this paper, accelerated life test is considered when the latent failure times follow Weibull competing risks models. When both scale and shape parameters are nonconstant and affected by operating stress, inference is discussed for a constant-stress model under a generalized progressive hybrid censoring. Maximum likelihood estimates together with existence and uniqueness are established, and the approximate confidence intervals for unknown parameters are proposed based on the asymptotic theory. Further, when the distributions of failure causes have common shape or scale parameters, associated point and interval estimates are also proposed. In addition, to compare the equivalence of the parameters of different Weibull competing risks, likelihood ratio tests for interested hypotheses are presented for complementary. Finally, extensive numerical studies and a real-life example are provided for illustrations.
Year
DOI
Venue
2022
10.1016/j.matcom.2021.08.017
Mathematics and Computers in Simulation
Keywords
DocType
Volume
Accelerated life test,Competing risks model,Weibull distribution,Generalized progressive hybrid censoring,Maximum likelihood estimation,Likelihood ratio test
Journal
192
ISSN
Citations 
PageRank 
0378-4754
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Liang Wang11567158.46
Yogesh Mani Tripathi245.34
Chandrakant Lodhi301.01
Xuanjia Zuo400.34