这个词是什么意思？
A class of machine learning approaches that allow a system to discover the representations required for feature detection or classification from raw data. The requirement for manual feature engineering is reduced by allowing a machine to learn the features and apply them to a given activity.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D000098409 · MeSH 2026。
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