sklearn.preprocessing模块

sklearn.preprocessing模块包括几个常用函数和转换器类

4.3. 预处理数据-scikit-learn (sklearn) 官方文档中文版

scikit-learn: machine learning in Python — scikit-learn 1.1.2 documentation

1.标准化（均值移除）

sklearn.preprocessig.scale()函数

import numpy as np
import sklearn.preprocessing as sp

data_to_be_standardized = np.array([[1,2,3],
                                    [4,5,6],
                                    [7,8,9]])
complete_standardized_data = sp.scale(data_to_be_standardized)
print(complete_standardized_data)
print(complete_standardized_data.mean(axis=0))
print(complete_standardized_data.std(axis=0))

2.范围缩放

查看笔记