线性回归（Linear Regression）

Posted 2020-10-05 WANGLC

from numpy import genfromtxt
from sklearn import linear_model

datapath=r"Delivery_Dummy.csv"
data = genfromtxt(datapath,delimiter=",")

x = data[1:,:-1]
y = data[1:,-1]
print x
print y

mlr = linear_model.LinearRegression()

mlr.fit(x, y)

print mlr
print "coef:"
print mlr.coef_
print "intercept"
print mlr.intercept_

xPredict =  [90,2,0,0,1]
yPredict = mlr.predict(xPredict)

print "predict:"
print yPredict

　

X
[[ 100.    4.    0.    1.    0.]
 [  50.    3.    1.    0.    0.]
 [ 100.    4.    0.    1.    0.]
 [ 100.    2.    0.    0.    1.]
 [  50.    2.    0.    0.    1.]
 [  80.    2.    0.    1.    0.]
 [  75.    3.    0.    1.    0.]
 [  65.    4.    1.    0.    0.]
 [  90.    3.    1.    0.    0.]
 [  90.    2.    0.    0.    1.]]
Y
[ 9.3  4.8  8.9  6.5  4.2  6.2  7.4  6.   7.6  6.1]