wehub-resource-sync
25 lines
553 B
Python
Executable File
25 lines
553 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 TestPower(unittest.TestCase):
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def test_power(self):
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x = nn.Parameter(2.)
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y = 2 ** x
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self.assertEqual(y.value, 4)
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y.backward()
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self.assertEqual(x.grad, 4 * np.log(2))
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x = np.random.rand(10, 2)
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xp = nn.Parameter(x)
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y = xp ** 3
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self.assertTrue((y.value == x ** 3).all())
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y.backward(np.ones((10, 2)))
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self.assertTrue(np.allclose(xp.grad, 3 * x ** 2))
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if __name__ == '__main__':
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unittest.main()
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