V2EX mixed model

Mixed Model

释义 Definition

混合模型:一种统计建模方法,把固定效应(对所有个体/组都相同的系统性影响)与随机效应(因个体、组、时间点等层级结构带来的随机差异)同时纳入模型。常用于重复测量数据分层/聚类数据纵向研究等情境。(也常称 mixed-effects model / linear mixed model

发音 Pronunciation

/mkst mdl/

例句 Examples

Mixed models help analyze data collected from students within different classrooms.
混合模型有助于分析来自不同班级学生的数据(学生嵌套在班级中)。

After controlling for age and treatment as fixed effects, the researcher used a mixed model with a random intercept for each hospital to account for clustering.
在将年龄和治疗作为固定效应控制后,研究者使用带有“每家医院随机截距”的混合模型来处理聚类效应。

词源 Etymology

mixed(混合的)+ model(模型)”指把两类效应“混合”在同一个统计框架中:一部分参数作为固定效应直接估计,另一部分用随机效应刻画不同组/个体的变异。该术语在20世纪后半叶随方成分模型与(广义)线性模型的发展而在统计学与实验设计中广泛使用。

相关词 Related Words

文学与著作 Literary Works

  • Mixed-Effects Models in S and S-PLUS(Pinheiro & Bates)
  • Linear Mixed Models for Longitudinal Data(Verbeke & Molenberghs)
  • Data Analysis Using Regression and Multilevel/Hierarchical Models(Gelman & Hill)
  • Generalized Linear Mixed Models: Modern Concepts, Methods and Applications(Stroup)
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