Estimation and Prediction for Gompertz Distribution under General Progressive Censoring

• Main Authors: Yuxuan Wang, Wenhao Gui
• Format: Article
• Language: English
• Published: MDPI AG 2021-05-01
• Series: Symmetry
• Subjects: general progressive Type-II censoring; bootstrap; EM algorithm; Bayesian estimation; Metropolis-Hasting algorithm; Bayesian prediction
• Online Access: https://www.mdpi.com/2073-8994/13/5/858

In this article, we discuss the estimation of the parameters for Gompertz distribution and prediction using general progressive Type-II censoring. Based on the Expectation–Maximization algorithm, we calculate the maximum likelihood estimates. Bayesian estimates are considered under different loss functions, which are symmetrical, asymmetrical and balanced, respectively. An approximate method—Tierney and Kadane—is used to derive the estimates. Besides, the Metropolis-Hasting (MH) algorithm is applied to get the Bayesian estimates as well. According to Fisher information matrix, we acquire asymptotic confidence intervals. Bootstrap intervals are also established. Furthermore, we build the highest posterior density intervals through the sample generated by the MH algorithm. Then, Bayesian predictive intervals and estimates for future samples are provided. Finally, for evaluating the quality of the approaches, a numerical simulation study is implemented. In addition, we analyze two real datasets.