
PARAMETRIC ESTIMATION OF FLEXIBLE WEIBULL EXTENSION MODELS UNDER PROGRESSIVE TYPE-II CENSORING
Umesh Kumar Sharma , Department of Statistics and DST-CIMS Banaras Hindu University, IndiaAbstract
Parametric estimation plays a pivotal role in modeling reliability and survival data under complex censoring schemes. This study focuses on the estimation of parameters in flexible Weibull extension models when facing progressive Type-II censoring. The flexible Weibull extension is a versatile distribution capable of capturing a wide range of failure patterns. We propose an estimation method that harnesses the power of maximum likelihood estimation in conjunction with progressive Type-II censoring. Simulated and real-world data are employed to evaluate the method's performance, demonstrating its effectiveness in accurately estimating the parameters of the flexible Weibull extension model under this challenging censoring scenario.
Keywords
Parametric Estimation, Flexible Weibull Extension, Progressive Type-II Censoring
References
N. Balakrishnan. Progressive methodology: An appraisal (with discussion). Test, 16:211– 259, 2007.
N. Balakrishnan and R. Aggrawalla. Progressive Censoring: Theory, Methods and Applications. Birkhauser, Boston, 2000.
Mark Bebbington, Chin-Diew Lai, and Ricardas Zitikis. A flexible Weibull extension. Reliability Engineering and System Safety, 92:719–726, 2007.
S.P. Brooks. Markov chain monte carlo method and Its application. Journal of the Royal Statistical Society: Series D, 47:69–100, 1998.
M.H. Chen and Q.M. Shao. Monte carlo estimation of Bayesian credible and HPD intervals. Journal of Computation and Graphical Statistics, 6:66–92, 1998.
C. Cohen. Progressively censored samples in life testing. Technometries, 5:327–329, 1963.
A.C. Cohen and N.J. Norgaard. Progressively censored sampling in the three parameter gamma distribution. Technometrics, 19:333–340, 1977.
H.T. Davis and M.L. Feldstein. The generalised Pareto law as a model for progressively censored suvival data. Biometrika, 66:299–306, 1979.