V2EX labeling function

Labeling Function

释义 Definition

标注函数:在机器学习(尤其是“弱监督/程序化标注”)中,用一条规则、启发式方法或小程序,把数据样本映射为某个标签(或输出“弃权/未知”)的函数,用于自动生成训练标签、减少人工标注成本。(也常简称 LF。)

发音 Pronunciation (IPA)

/lebl fkn/

例句 Examples

A labeling function marks emails with “spam” when they contain certain keywords.
当邮件包含某些关键词时,一个标注函数会把它标为“垃圾邮件”。

In weak supervision, multiple labeling functions can vote on a label, and a model learns from their noisy outputs.
在弱监督中,多个标注函数可以对标签“投票”,模型再从这些带噪声的输出中学习。

词源 Etymology

labeling 来自 label(“标签”),词源可追溯到中古法语 label/lambel,本义与“挂在物品上的标记”相关;function 来自拉丁语 functio(“执行、作用”)。合起来表示“用来给数据贴标签的作用/规则(函数)”。

相关词 Related Words

文学与著作 Literary Works

  • Ratner et al., “Snorkel: Rapid Training Data Creation with Weak Supervision”(论文,提出用 labeling functions 进行程序化标注的代表性工作)
  • Ratner et al., “Data Programming: Creating Large Training Sets, Quickly”(论文,系统阐述用标注函数生成训练数据的思想)
  • Snorkel 项目与相关文档/教程(在弱监督语境中高频使用 labeling function 一词)
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