wehub-resource-sync
27 lines
635 B
Python
Executable File
27 lines
635 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 TestDivide(unittest.TestCase):
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def test_divide(self):
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x = nn.Parameter(10.)
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z = x / 2
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self.assertEqual(z.value, 5)
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z.backward()
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self.assertEqual(x.grad, 0.5)
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x = np.random.rand(5, 10, 3)
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y = np.random.rand(10, 1)
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p = nn.Parameter(y)
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z = x / p
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self.assertTrue((z.value == x / y).all())
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z.backward(np.ones((5, 10, 3)))
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d = np.sum(-x / y ** 2, axis=0).sum(axis=1, keepdims=True)
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self.assertTrue((p.grad == d).all())
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if __name__ == '__main__':
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unittest.main()
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