wehub-resource-sync
22 lines
533 B
Python
Executable File
22 lines
533 B
Python
Executable File
import unittest
|
|
import numpy as np
|
|
from prml import nn
|
|
|
|
|
|
class TestBernoulli(unittest.TestCase):
|
|
|
|
def test_bernoulli(self):
|
|
np.random.seed(1234)
|
|
obs = np.random.choice(2, 1000, p=[0.1, 0.9])
|
|
a = nn.Parameter(0)
|
|
for _ in range(100):
|
|
a.cleargrad()
|
|
x = nn.random.Bernoulli(logit=a, data=obs)
|
|
x.log_pdf().sum().backward()
|
|
a.value += a.grad * 0.01
|
|
self.assertAlmostEqual(x.mu.value, np.mean(obs))
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|