请输入您要查询的字词:
单词
expectation maximization algorithm,EM algorithm
释义
expectation maximization algorithm,EM algorithm
Encyclopedia
理学
统计计算
释
expectation maximization algorithm,EM algorithm
EM算法
EM算法是一种用于处理不完全数据的统计模型中参数的最大似然估计或最大后验估计的迭代方法。EM算法的迭代是在一个期望步骤(简称E步)和一个最大化步骤(简称M步)间交替进行,其中E步是利用参数的当前估计值来构造对数似然期望值的一个函数,M步是对期望步得到的函数关于参数极大化,随后这些参数的估计值又用来确定下一个期望步中潜变量的分布。EM算法需要对待估参数指定初始值,E步和M步反复迭代,直至收敛,算法终止。
随便看
field measurement
field medical gas generation equipment
field medical technical support equipment
field method
field microclimate
field mode
field model
field model test
field nebula
field non-available precipitation
field notebook
field nursing equipment
field observation and check of remote sensing geology
field observation of frozen soil depth
field observation record
field observatory
field of algebraic functions
field of characteristic p
field of class two
field of coefficients
field of complex numbers
field of constants
field of curvature
field of curves
field of definition
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2026/1/10 5:02:34