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按每组参考值对正正化组的极值解决方案
原文:Polars solution to normalise groups by per-group reference value

我试图使用极地来按每个组的单个引用值来使条目组的值正常化。 样本数据: df = pl. from_ repr("")"\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \\ \ \ \ \\\\\\\\\ \ \\\\\\\\\\\\\\\

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