piiswrong commented on a change in pull request #9662: Gluon PReLU, ELU, SELU, Swish
URL: https://github.com/apache/incubator-mxnet/pull/9662#discussion_r165493998
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File path: src/operator/leaky_relu-inl.h
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@@ -177,9 +182,20 @@ class LeakyReLUOp : public Operator {
case leakyrelu::kPReLU: {
weight = in_data[leakyrelu::kGamma].get<xpu, 1, real_t>(s);
grad_weight = in_grad[leakyrelu::kGamma].get<xpu, 1, real_t>(s);
- grad_weight = sumall_except_dim<1>(F<prelu_grad>(data) * grad);
- gdata = F<mshadow_op::xelu_grad>(data, mshadow::expr::broadcast<1>(weight,
data.shape_))
- * grad;
+ if (weight.shape_[0] == 1) {
Review comment:
Infershape sets it to data.shape[1].
When would weight's shape be (1,)?
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