摘要
讨论双应力交叉步进加速寿命试验在获得混合分组数据情况下参数的极大似然估计问题.当产品的寿命服从指数分布,利用EM算法给出参数极大似然估计的迭代式,并提供迭代运算的初值.
This paper mainly discusses estimators of parameters in accelerated life model with step-double-stress based on mixed grouped data. When the products' life distribution is exponential, it presents the equations for most likelihood estimators of parameters by EM algorithm and provides initial values for parameters.
出处
《华中师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2010年第2期192-195,共4页
Journal of Central China Normal University:Natural Sciences
关键词
加速寿命试验
EM算法
混合分组数据
指数分布
accelerated life test
EM algorithm
mixed grouped data
exponential distribution