摘要
利用图解法研究了由EM算法得出的有数据删失情况下对数正态分布参数的极大似然估计，得到了在Matlab中利用迭代算法计算参数估计值的方法．
Logarithmic normal distribution is one of the important distributions in survival analysis. This paper uses the graphic method to study the maximum likelihood estimation based on random censored data by using EM algorithm, and then gives the graphic method to calculate the parameter estimations in Matlab. This method is simple and effective.
出处
《北华大学学报（自然科学版）》
CAS
2007年第5期394-397,共4页
Journal of Beihua University（Natural Science）
关键词
对数正态分布
极大似然估计
完全极大似然估计
EM算法
Logarithmic normal distribution
Maximum likelihood estimation
Matlab totally maximum likelihood estimation
EM algorithm
