wehub-resource-sync
25 lines
543 B
Python
Executable File
25 lines
543 B
Python
Executable File
import unittest
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import numpy as np
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from prml import nn
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class TestLog(unittest.TestCase):
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def test_log(self):
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x = nn.Parameter(2.)
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y = nn.log(x)
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self.assertEqual(y.value, np.log(2))
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y.backward()
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self.assertEqual(x.grad, 0.5)
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x = np.random.rand(4, 6)
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p = nn.Parameter(x)
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y = nn.log(p)
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self.assertTrue((y.value == np.log(x)).all())
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y.backward(np.ones((4, 6)))
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self.assertTrue((p.grad == 1 / x).all())
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if __name__ == '__main__':
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unittest.main()
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