A Note on Weibull Parameter Estimation with Interval Censoring Using the EM Algorithm

In many engineering applications, it is often the case that observations are only available in interval form. this note, by using expectation-maximization (EM) algorithm, parameter estimation of Weibull distribution with interval-censored data considered. The estimates obtained EM algorithm compared those conventional Newton-type methods, including Davidon–Fletcher–Powell (DFP) and Berndt–Hall–Hall–Hausman (BHHH) methods. results indicate proposed method demonstrate superior convergence properties to DFP BHHH Finally, a numerical study illustrates advantages provided.