V2EX latent-variable

Latent Variable

Definition / 定义

latent variable潜变量、隐变量。指在模型中无法直接观测、但会影响可观测数据的变量,常用于统计学、机器学习、心理测量与因果推断等领域。(也常见写法:latent-variable

Pronunciation / 发音

/let()nt vrib()l/

Examples / 例句

A latent variable can explain why two measurements are correlated.
潜变量可以解释为什么两个测量结果会相关。

In factor analysis, intelligence is often modeled as a latent variable inferred from test scores, rather than observed directly.
在因子分析中,智力常被建模为由测试分数推断出的潜变量,而不是直接观测到的量。

Etymology / 词源

latent 来自拉丁语 latēre,意为“隐藏”。variable 来自拉丁语 variābilis,意为“可变化的”。合起来表示“隐藏的(但可变化的)变量”,强调它不直接出现于观测数据中,而是通过模型被推断出来。

Related Words / 相关词

Literary Works / 文学作品

  • Pattern Recognition and Machine Learning(Christopher M. Bishop)
  • The Elements of Statistical Learning(Trevor Hastie, Robert Tibshirani, Jerome Friedman)
  • Bayesian Data Analysis(Andrew Gelman 等)
  • Causality: Models, Reasoning, and Inference(Judea Pearl)
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