机器学习实战一：knn算法 约会网站

1、sklearn库 import numpy as np import pandas as pd from sklearn.model_selection import train_test_split from sklearn.neighbors import KNeighborsClassifier df = pd.read_table('D:\datingTestSet2.txt',header = None) data=df.iloc[:,0:3] target=df.iloc[:,3] x_train,x_test, y_train, y_test =train_test_spl