哪位大神幫我看一下那個(gè)地方出錯(cuò)了

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import numpy as np

from numpy.linalg import inv

from numpy import dot

from numpy import mat

import pandas as pd;

dataset = pd.read_csv('data.csv')

#print(dataset)

temp = dataset.iloc[:,2:5]

temp['X0']=1? ? #截距

X=temp.iloc[:,[3,0,1,2]]? ? #讀取temp的第3,0,1,2列

#print(X)

#iloc[m,n]? m-行? n-列

Y=dataset.iloc[:,1].values.reshape(150,1)

#print(Y)

theta = dot(dot(inv(dot(X.T,X)),X.T),Y)

print(theta)

theta=np.array([1.,1.,1.,1.]).reshape(4,1)

alpha=0.1? ?#學(xué)習(xí)速率

X0=X.iloc[:,0].values.reshape(150,1)

X1=X.iloc[:,1].values.reshape(150,1)

X2=X.iloc[:,2].values.reshape(150,1)

X3=X.iloc[:,3].values.reshape(150,1)

for i in range(10000):

? ? temp[0]=theta[0] + alpha*np.sum((Y-dot(X,theta))*X0)/150.0

? ? temp[1]=theta[1] + alpha*np.sum((Y-dot(X,theta))*X0)/150.0

? ? temp[2]=theta[2] + alpha*np.sum((Y-dot(X,theta))*X0)/150.0

? ? temp[3]=theta[3] + alpha*np.sum((Y-dot(X,theta))*X0)/150.0

? ? theta=temp

print(theta)

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