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readme.md

Logistic Regression

逻辑回归详解:https://en.wikipedia.org/wiki/Logistic_function

目录

  • 训练集:./data/train.txt
  • 测试集:./data/test.txt
  • logistic_regression.py:逻辑回归模型
  • test.py:模型测试实例

Result

1-th sample  1 is classfied as: 1
2-th sample  1 is classfied as: 1
3-th sample  1 is classfied as: 1
4-th sample  0 is classfied as: 1
classify error.
5-th sample  1 is classfied as: 1
6-th sample  1 is classfied as: 1
7-th sample  1 is classfied as: 1
8-th sample  1 is classfied as: 1
9-th sample  1 is classfied as: 1
10-th sample  0 is classfied as: 1
classify error.
11-th sample  1 is classfied as: 1
12-th sample  0 is classfied as: 1
classify error.
13-th sample  0 is classfied as: 1
classify error.
14-th sample  1 is classfied as: 1
15-th sample  1 is classfied as: 1
16-th sample  1 is classfied as: 1
17-th sample  1 is classfied as: 1
18-th sample  0 is classfied as: 1
classify error.
19-th sample  0 is classfied as: 0
20-th sample  0 is classfied as: 1
classify error.
21-th sample  1 is classfied as: 1
22-th sample  1 is classfied as: 1
23-th sample  0 is classfied as: 1
classify error.
24-th sample  0 is classfied as: 1
classify error.
25-th sample  1 is classfied as: 1
26-th sample  1 is classfied as: 1
27-th sample  1 is classfied as: 1
28-th sample  1 is classfied as: 1
29-th sample  1 is classfied as: 1
30-th sample  1 is classfied as: 1
31-th sample  1 is classfied as: 1
32-th sample  1 is classfied as: 1
33-th sample  1 is classfied as: 1
34-th sample  0 is classfied as: 1
classify error.
35-th sample  1 is classfied as: 1
36-th sample  0 is classfied as: 0
37-th sample  1 is classfied as: 1
38-th sample  1 is classfied as: 1
39-th sample  1 is classfied as: 1
40-th sample  1 is classfied as: 1
41-th sample  1 is classfied as: 1
42-th sample  1 is classfied as: 1
43-th sample  1 is classfied as: 1
44-th sample  0 is classfied as: 1
classify error.
45-th sample  1 is classfied as: 1
46-th sample  1 is classfied as: 1
47-th sample  1 is classfied as: 1
48-th sample  1 is classfied as: 1
49-th sample  1 is classfied as: 1
50-th sample  0 is classfied as: 1
classify error.
51-th sample  0 is classfied as: 1
classify error.
52-th sample  0 is classfied as: 1
classify error.
53-th sample  0 is classfied as: 1
classify error.
54-th sample  1 is classfied as: 1
55-th sample  1 is classfied as: 1
56-th sample  1 is classfied as: 1
57-th sample  1 is classfied as: 1
58-th sample  0 is classfied as: 1
classify error.
59-th sample  1 is classfied as: 1
60-th sample  1 is classfied as: 0
classify error.
61-th sample  1 is classfied as: 1
62-th sample  0 is classfied as: 1
classify error.
63-th sample  1 is classfied as: 1
64-th sample  1 is classfied as: 1
65-th sample  0 is classfied as: 1
classify error.
66-th sample  1 is classfied as: 1
67-th sample  0 is classfied as: 1
classify error.
error rate is: 0.2836

参考资料

  • 机器学习实战
  • Andrew Ng 机器学习公开课