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2026-07-13 13:30:25 +08:00

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Python
Executable File

import unittest
from prml import nn
class TestGamma(unittest.TestCase):
def test_gamma(self):
self.assertEqual(24, nn.gamma(5).value)
a = nn.Parameter(2.5)
eps = 1e-5
b = nn.gamma(a)
b.backward()
num_grad = ((nn.gamma(a + eps) - nn.gamma(a - eps)) / (2 * eps)).value
self.assertAlmostEqual(a.grad, num_grad)
if __name__ == '__main__':
unittest.main()