Unverified50% confidenceFactExact time
对高基数类别特征进行独热编码会导致特征空间急剧膨胀，造成维度灾难，使欧氏距离在高维稀疏空间中区分能力急剧下降
1
Sources
50%
Confidence
Long-term
Relevance
7/11/2026
First Seen
Sources
K-means vs Random Forest: How to Choose the Right Algorithm from First Principles
redditr/learnmachinelearning7/10/2026
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