数据分组和右删失下混合广义指数分布的参数估计

Parameter Estimation for a Mixture of Generalized Exponential Distributions under Grouped and Right-Censored Samples

本文利用EM算法考虑了混合广义指数分布模型在分组数据和右删失情形下的参数估计问题,并给出了相应的估计公式,一组模拟研究说明了所提算法的有效性.最后,应用所提模型对一组医学数据进行了分析.

Parameter estimation of mixed generalized exponential distribution model under grouped and right- censored data is considered by using EM algorithm in this paper. The estimation formulae are obtained and some simulations are presented to illustrate the proposed method. Finally, a set of medicine data is analyzed.