larroy commented on a change in pull request #15530: [MXNET-978] Higher Order
Gradient Support `arcsinh`, `arccosh`.
URL: https://github.com/apache/incubator-mxnet/pull/15530#discussion_r304112629
##########
File path: src/operator/tensor/elemwise_unary_op_trig.cc
##########
@@ -307,7 +307,36 @@ The storage type of ``arcsinh`` output depends upon the
input storage type:
.set_attr<nnvm::FGradient>("FGradient", ElemwiseGradUseIn{ "_backward_arcsinh"
});
MXNET_OPERATOR_REGISTER_BINARY_WITH_SPARSE_CPU_DR(_backward_arcsinh,
-
unary_bwd<mshadow_op::arcsinh_grad>);
+
unary_bwd<mshadow_op::arcsinh_grad>)
+.set_attr<nnvm::FGradient>("FGradient",
+ [](const nnvm::NodePtr& n, const std::vector<nnvm::NodeEntry>& ograds) {
+ // ograds[0]: head_grad_grads (dL/dy_grad)
Review comment:
dL/dx_grad ?
https://github.com/apache/incubator-mxnet/pull/15331#issuecomment-511978900
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