Mercurial > pylearn

annotate _test_linear_regression.py @ 485:e8c37244b54f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Small bugfix in regularization
author Joseph Turian <turian@gmail.com>
date Tue, 28 Oct 2008 01:37:32 -0400
parents 8e4d2ebd816a
children 317a052f9b14
rev   line source
432
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
1
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
2 import unittest
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
3 from linear_regression import *
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
4 from make_test_datasets import *
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
5 import numpy
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
6
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
7 class test_linear_regression(unittest.TestCase):
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
8
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
9 def test1(self):
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
10 trainset,testset,theta=make_artificial_datasets_from_function(n_inputs=3,
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
11 n_targets=2,
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
12 n_examples=100,
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
13 f=linear_predictor)
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
14
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
15 assert trainset.fields()['input'].shape==(50,3)
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
16 assert testset.fields()['target'].shape==(50,2)
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
17 regressor = LinearRegression(L2_regularizer=0.1)
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
18 predictor = regressor(trainset)
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
19 test_data = testset.fields()
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
20 mse = predictor.compute_mse(test_data['input'],test_data['target'])
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
21 print 'mse = ',mse
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
22
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
23 if __name__ == '__main__':
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
24 unittest.main()
8e4d2ebd816a added a test for LinearRegression
Yoshua Bengio <bengioy@iro.umontreal.ca>
parents:
diff changeset
25