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[BUGFIX] fix ELU function will appear nan when calculating the gradient #14673

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Apr 23, 2019
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[BUGFIX] fix ELU function will appear nan when calculating the gradient #14673

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bee7e96
fix ELU
fierceX Apr 11, 2019
5f3dd27
fix
fierceX Apr 17, 2019
dd52309
fix
fierceX Apr 18, 2019
fcc7caf
fix
fierceX Apr 18, 2019
fd21ad0
fix
fierceX Apr 18, 2019
faa8a3f
fix
fierceX Apr 23, 2019
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2 changes: 1 addition & 1 deletion python/mxnet/gluon/nn/activations.py
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Expand Up @@ -158,7 +158,7 @@ def __init__(self, alpha=1.0, **kwargs):
self._alpha = alpha

def hybrid_forward(self, F, x):
return F.where(x > 0, x, self._alpha * (F.exp(x) - 1.0))
return F.LeakyReLU(x, act_type='elu', slope=self._alpha)
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Nit: The extra space before return



class SELU(HybridBlock):
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2 changes: 1 addition & 1 deletion tests/python/unittest/test_gluon.py
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Expand Up @@ -1180,7 +1180,7 @@ def swish_test(x):
elu = mx.gluon.nn.ELU()
def elu_test(x):
def elu(x):
return 1.0 * (mx.nd.exp(x) - 1) if x < 0 else x
return mx.nd.expm1(x) if x <= 0.0 else x
return [elu(x_i) for x_i in x]

for test_point, ref_point in zip(elu_test(point_to_validate), elu(point_to_validate)):
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