摘要：
# coding=utf-8 from sklearn.datasets import load_iris from sklearn.preprocessing import StandardScaler,MinMaxScaler from sklearn.neighbors import KNei 阅读全文
摘要：
# coding=utf-8 from sklearn.feature_selection import VarianceThreshold from sklearn.decomposition import PCA def var(): """ 特征值过滤 根据方差进行过滤，某列方差小于设定值则认 阅读全文