joddiy commented on a change in pull request #485: SINGA -475 add Sub operator
implementation to singa
URL: https://github.com/apache/incubator-singa/pull/485#discussion_r309661987
##########
File path: test/python/test_operation.py
##########
@@ -322,6 +322,21 @@ def test_LeakyRelu(self):
np.testing.assert_array_almost_equal(tensor.to_numpy(result), XT)
self.check_shape(dx.shape(), (3, 2))
+ def test_Sub(self):
+
X=np.array([0.8,-1.2,3.3,-3.6,-0.5,0.5]).reshape(3,2).astype(np.float32)
+ Y=np.array([4.4,5.3,3.2,3.7,5.4,6.3]).reshape(3,2).astype(np.float32)
+ x = tensor.from_numpy(X)
+ y = tensor.from_numpy(Y)
+ x.to_device(gpu_dev)
+ y.to_device(gpu_dev)
+
+ result=autograd.sub(x,y)
+ dx=result.creator.backward(x.data)[0]
+
+ result_np=np.subtract(X,Y)
+ np.testing.assert_array_almost_equal(tensor.to_numpy(result),
result_np)
Review comment:
please add the test case of backward propagation.
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