nudles commented on a change in pull request #482: SINGA-474 hardsigmoid
operator
URL: https://github.com/apache/incubator-singa/pull/482#discussion_r308032587
##########
File path: test/python/test_operation.py
##########
@@ -321,7 +321,34 @@ def test_LeakyRelu(self):
np.testing.assert_array_almost_equal(tensor.to_numpy(result), XT)
self.check_shape(dx.shape(), (3, 2))
+ def test_HardSigmoid_cpu(self):
+ x = np.array([-0.9, -0.3, -0.1, 0.1, 0.5, 0.9]).reshape(3,
2).astype(np.float32)
+ #y = max(0, min(1, alpha * x + gamma))
+ a=0.5
+ g=0.6
+ y = np.clip(x * 0.5 + 0.6, 0, 1)
+ x = tensor.from_numpy(x)
+ x.to_device(cpu_dev)
+
+ result = autograd.hardsigmoid(x,a,g)
+ dx = result.creator.backward(x.data)
+
+ np.testing.assert_array_almost_equal(tensor.to_numpy(result), y,
decimal=5)
Review comment:
backward is not tested..
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