Mercurial > hg > tvii
annotate tests/test_sigmoid.py @ 42:38aa9098bf2d
derivative of sigmoid
| author | Jeff Hammel <k0scist@gmail.com> |
|---|---|
| date | Mon, 04 Sep 2017 14:34:00 -0700 |
| parents | d6d2ecb33c95 |
| children |
| rev | line source |
|---|---|
| 18 | 1 #!/usr/bin/env python |
| 2 | |
| 3 """ | |
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d6d2ecb33c95
[logistic regression] smoke tests
Jeff Hammel <k0scist@gmail.com>
parents:
19
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changeset
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4 test sigmoid related functionality |
| 18 | 5 """ |
| 6 | |
| 7 import os | |
| 8 import unittest | |
| 42 | 9 from tvii.sigmoid import sigmoid, sigmoidprime |
| 18 | 10 |
| 11 | |
| 12 class TestSigmoid(unittest.TestCase): | |
| 13 | |
| 14 def test_basic(self): | |
| 15 """test two points of the sigmoid function""" | |
| 16 | |
| 17 answer = sigmoid([0,2]) | |
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19
cd43ce453358
[numpy] of course we have to cast everything here too
Jeff Hammel <k0scist@gmail.com>
parents:
18
diff
changeset
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18 assert len(answer) == 2 |
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20
d6d2ecb33c95
[logistic regression] smoke tests
Jeff Hammel <k0scist@gmail.com>
parents:
19
diff
changeset
|
19 assert answer[0] == 0.5 |
|
d6d2ecb33c95
[logistic regression] smoke tests
Jeff Hammel <k0scist@gmail.com>
parents:
19
diff
changeset
|
20 assert abs(answer[1] - 0.88079708) < 1e-6 |
| 18 | 21 |
| 42 | 22 def test_derivative(self): |
| 23 | |
| 24 self.assertAlmostEqual(sigmoidprime(0), 0.25) | |
| 25 | |
| 18 | 26 if __name__ == '__main__': |
| 27 unittest.main() |