洲小洲

代码如下：需要aqi2.csv文件的私我import numpy as npfrom sklearn.model_selection import train_test_splitfrom sklearn.metrics import mean_absolute_error,mean_squared_error,r2_scoreimport matplotlib.pyplot as plt#特征标准化def featureNorm(x): mu = x.mean(0)# si

代码import numpy as npfrom sklearn.model_selection import train_test_splitfrom numpy.linalg import invimport matplotlib.pyplot as plt#读数据，预处理数据data = np.loadtxt("D:/机器学习/data/aqi2.csv",delimiter=",",skiprows=1,dtype=float)#print(data)index = np.ones(