V2EX unsupervised learning

Unsupervised Learning

释义 Definition

无监督学习:一种机器学习方法,在没有人工标注的“正确答案”(标签)的情况下,让模型从数据中自动发现结构与规律,例如把相似样本分组(聚类)、找到更紧凑的表示(降维)、学习数据的潜在特征等。也常用于异常检测、数据探索与表示学习。

例句 Examples

Unsupervised learning can group customers with similar buying habits.
无监督学习可以把购买习惯相似的顾客分成一组。

In practice, unsupervised learning is often used to discover hidden patterns in large datasets before building a predictive model.
在实际应用中,无监督学习常用于在建立预测模型之前,从海量数据中发现隐藏的模式。

发音 Pronunciation (IPA)

/nsuprvazd ln/

词源 Etymology

un-(表示“非、无”)+ supervised(“受监督的”,来自 supervise,意为“监督、指导”)+ learning(“学习”)组成,字面意思就是“没有监督的学习”。在机器学习语境中,“监督”通常指带有标签的数据与人为指导的训练目标。

相关词 Related Words

文献与著作 Literary / Notable Works

  • Pattern Recognition and Machine Learning(Christopher M. Bishop)在聚类、混合模型等章节中系统讨论无监督学习方法。
  • The Elements of Statistical Learning(Hastie, Tibshirani, Friedman)包含无监督学习与探索性数据分析相关内容。
  • Deep Learning(Goodfellow, Bengio, Courville)涉及表示学习、无监督/自监督相关思想与模型。
  • Information Theory, Inference, and Learning Algorithms(David J. C. MacKay)从信息论与概率角度讨论学习与无监督建模思路。
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