In [25]:
print(__doc__)
import numpy as np
from sklearn import datasets,linear_model
from sklearn.metrics import mean_squared_error,r2_score
import matplotlib.pyplot as plt
diabetes = datasets.load_diabetes()
print(diabetes.data)
print(diabetes.target)
print('=='*19)
diabetes_x = diabetes.data[:,np.newaxis,2]
print(diabetes_x)
diabetes_x_train = diabetes_x[:-20]
diabetes_x_test = diabetes_x[-20:]
diabetes_y_train = diabetes.target[:-20]
diabetes_y_test = diabetes.target[-20:]
print( 'train', diabetes_x_train)
print('test', diabetes_x_test)
lr = linear_model.LinearRegression()
lr.fit(diabetes_x_train,diabetes_y_train)
diabetes_y_pred = lr.predict(diabetes_x_test)
print('pred',diabetes_y_pred)
print('test',diabetes_y_test)
print('coef',lr.coef_)
print('mse : %.2f' % mean_squared_error(y_true=diabetes_y_test,y_pred=diabetes_y_pred))
print('r2 : %.2f' % r2_score(y_true=diabetes_y_test,y_pred=diabetes_y_pred))
#plt.scatter(diabetes_x_test, diabetes_y_test, color='black')
#plt.plot(diabetes_x_test, diabetes_y_pred, color='blue', linewidth=3)
plt.scatter(x=diabetes_x_test,y=diabetes_y_test,color='black')
plt.plot(diabetes_x_test,diabetes_y_pred, color='blue',linewidth=3)
plt.xticks(())
plt.yticks(())
plt.show()
Automatically created module for IPython interactive environment
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[ 151. 75. 141. 206. 135. 97. 138. 63. 110. 310. 101. 69.
179. 185. 118. 171. 166. 144. 97. 168. 68. 49. 68. 245.
184. 202. 137. 85. 131. 283. 129. 59. 341. 87. 65. 102.
265. 276. 252. 90. 100. 55. 61. 92. 259. 53. 190. 142.
75. 142. 155. 225. 59. 104. 182. 128. 52. 37. 170. 170.
61. 144. 52. 128. 71. 163. 150. 97. 160. 178. 48. 270.
202. 111. 85. 42. 170. 200. 252. 113. 143. 51. 52. 210.
65. 141. 55. 134. 42. 111. 98. 164. 48. 96. 90. 162.
150. 279. 92. 83. 128. 102. 302. 198. 95. 53. 134. 144.
232. 81. 104. 59. 246. 297. 258. 229. 275. 281. 179. 200.
200. 173. 180. 84. 121. 161. 99. 109. 115. 268. 274. 158.
107. 83. 103. 272. 85. 280. 336. 281. 118. 317. 235. 60.
174. 259. 178. 128. 96. 126. 288. 88. 292. 71. 197. 186.
25. 84. 96. 195. 53. 217. 172. 131. 214. 59. 70. 220.
268. 152. 47. 74. 295. 101. 151. 127. 237. 225. 81. 151.
107. 64. 138. 185. 265. 101. 137. 143. 141. 79. 292. 178.
91. 116. 86. 122. 72. 129. 142. 90. 158. 39. 196. 222.
277. 99. 196. 202. 155. 77. 191. 70. 73. 49. 65. 263.
248. 296. 214. 185. 78. 93. 252. 150. 77. 208. 77. 108.
160. 53. 220. 154. 259. 90. 246. 124. 67. 72. 257. 262.
275. 177. 71. 47. 187. 125. 78. 51. 258. 215. 303. 243.
91. 150. 310. 153. 346. 63. 89. 50. 39. 103. 308. 116.
145. 74. 45. 115. 264. 87. 202. 127. 182. 241. 66. 94.
283. 64. 102. 200. 265. 94. 230. 181. 156. 233. 60. 219.
80. 68. 332. 248. 84. 200. 55. 85. 89. 31. 129. 83.
275. 65. 198. 236. 253. 124. 44. 172. 114. 142. 109. 180.
144. 163. 147. 97. 220. 190. 109. 191. 122. 230. 242. 248.
249. 192. 131. 237. 78. 135. 244. 199. 270. 164. 72. 96.
306. 91. 214. 95. 216. 263. 178. 113. 200. 139. 139. 88.
148. 88. 243. 71. 77. 109. 272. 60. 54. 221. 90. 311.
281. 182. 321. 58. 262. 206. 233. 242. 123. 167. 63. 197.
71. 168. 140. 217. 121. 235. 245. 40. 52. 104. 132. 88.
69. 219. 72. 201. 110. 51. 277. 63. 118. 69. 273. 258.
43. 198. 242. 232. 175. 93. 168. 275. 293. 281. 72. 140.
189. 181. 209. 136. 261. 113. 131. 174. 257. 55. 84. 42.
146. 212. 233. 91. 111. 152. 120. 67. 310. 94. 183. 66.
173. 72. 49. 64. 48. 178. 104. 132. 220. 57.]
======================================
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[-0.05578531]
[-0.02452876]
[-0.03638469]
[-0.00836158]
[-0.04177375]
[ 0.12744274]
[-0.07734155]
[ 0.02828403]
[-0.02560657]
[-0.06225218]
[-0.00081689]
[ 0.08864151]
[-0.03207344]
[ 0.03043966]
[ 0.00888341]
[ 0.00672779]
[-0.02021751]
[-0.02452876]
[-0.01159501]
[ 0.02612841]
[-0.05901875]
[-0.03638469]
[-0.02452876]
[ 0.01858372]
[-0.0902753 ]
[-0.00512814]
[-0.05255187]
[-0.02237314]
[-0.02021751]
[-0.0547075 ]
[-0.00620595]
[-0.01698407]
[ 0.05522933]
[ 0.07678558]
[ 0.01858372]
[-0.02237314]
[ 0.09295276]
[-0.03099563]
[ 0.03906215]
[-0.06117437]
[-0.00836158]
[-0.0374625 ]
[-0.01375064]
[ 0.07355214]
[-0.02452876]
[ 0.03367309]
[ 0.0347509 ]
[-0.03854032]
[-0.03961813]
[-0.00189471]
[-0.03099563]
[-0.046085 ]
[ 0.00133873]
[ 0.06492964]
[ 0.04013997]
[-0.02345095]
[ 0.05307371]
[ 0.04013997]
[-0.02021751]
[ 0.01427248]
[-0.03422907]
[ 0.00672779]
[ 0.00457217]
[ 0.03043966]
[ 0.0519959 ]
[ 0.06169621]
[-0.00728377]
[ 0.00564998]
[ 0.05415152]
[-0.00836158]
[ 0.114509 ]
[ 0.06708527]
[-0.05578531]
[ 0.03043966]
[-0.02560657]
[ 0.10480869]
[-0.00620595]
[-0.04716281]
[-0.04824063]
[ 0.08540807]
[-0.01267283]
[-0.03315126]
[-0.00728377]
[-0.01375064]
[ 0.05954058]
[ 0.02181716]
[ 0.01858372]
[-0.01159501]
[-0.00297252]
[ 0.01750591]
[-0.02991782]
[-0.02021751]
[-0.05794093]
[ 0.06061839]
[-0.04069594]
[-0.07195249]
[-0.05578531]
[ 0.04552903]
[-0.00943939]
[-0.03315126]
[ 0.04984027]
[-0.08488624]
[ 0.00564998]
[ 0.02073935]
[-0.00728377]
[ 0.10480869]
[-0.02452876]
[-0.00620595]
[-0.03854032]
[ 0.13714305]
[ 0.17055523]
[ 0.00241654]
[ 0.03798434]
[-0.05794093]
[-0.00943939]
[-0.02345095]
[-0.0105172 ]
[-0.03422907]
[-0.00297252]
[ 0.06816308]
[ 0.00996123]
[ 0.00241654]
[-0.03854032]
[ 0.02612841]
[-0.08919748]
[ 0.06061839]
[-0.02884001]
[-0.02991782]
[-0.0191397 ]
[-0.04069594]
[ 0.01535029]
[-0.02452876]
[ 0.00133873]
[ 0.06924089]
[-0.06979687]
[-0.02991782]
[-0.046085 ]
[ 0.01858372]
[ 0.00133873]
[-0.03099563]
[-0.00405033]
[ 0.01535029]
[ 0.02289497]
[ 0.04552903]
[-0.04500719]
[-0.03315126]
[ 0.097264 ]
[ 0.05415152]
[ 0.12313149]
[-0.08057499]
[ 0.09295276]
[-0.05039625]
[-0.01159501]
[-0.0277622 ]
[ 0.05846277]
[ 0.08540807]
[-0.00081689]
[ 0.00672779]
[ 0.00888341]
[ 0.08001901]
[ 0.07139652]
[-0.02452876]
[-0.0547075 ]
[-0.03638469]
[ 0.0164281 ]]
test [[ 0.07786339]
[-0.03961813]
[ 0.01103904]
[-0.04069594]
[-0.03422907]
[ 0.00564998]
[ 0.08864151]
[-0.03315126]
[-0.05686312]
[-0.03099563]
[ 0.05522933]
[-0.06009656]
[ 0.00133873]
[-0.02345095]
[-0.07410811]
[ 0.01966154]
[-0.01590626]
[-0.01590626]
[ 0.03906215]
[-0.0730303 ]]
pred [ 225.9732401 115.74763374 163.27610621 114.73638965 120.80385422
158.21988574 236.08568105 121.81509832 99.56772822 123.83758651
204.73711411 96.53399594 154.17490936 130.91629517 83.3878227
171.36605897 137.99500384 137.99500384 189.56845268 84.3990668 ]
test [ 233. 91. 111. 152. 120. 67. 310. 94. 183. 66. 173. 72.
49. 64. 48. 178. 104. 132. 220. 57.]
coef [ 938.23786125]
mse : 2548.07
r2 : 0.47
Content source: thushear/MLInAction
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