Unverified50% confidenceFactExact time
StandardScaler 在 fit 和 transform 内部对列名匹配时可能做二次规范化（去引号、统一大小写），从而与原始 .columns 的表示形式产生偏差
1
Sources
50%
Confidence
Long-term
Relevance
7/17/2026
First Seen
Sources
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