混合模型是可靠性工程,金融保险和计量经济学等领域中的一类重要模型。本文利用EM算法考虑了混合指数分布在分组数据和右截尾情形下的参数估计问题,并给出了相应的参数估计公式,最后的数值模拟表明EM算法对我们的模型是有效的。
Mixed distribution plays an important role in the field of reliability engineering, finance and insurance, econometrics and so on. In this paper, we will make use of EM Algorithm to estimate parameters of mixed exponential distribution model with grouped and right-censored data. Finally, the estimation formulae of the model are given out and the simulations show EM Algorithm is effective to our model.