troyliu0105 opened a new issue #19650:
URL: https://github.com/apache/incubator-mxnet/issues/19650
## Description
I want to make a GAM for symbol block. I just wonder whether here exists an
api to do this, like below:
```python
ipt = mx.sym.var('data')
out = net(ipt)
internal = out.get_internals(internal_name)
grad_op = mx.sym.get_grad(internal)
net = SymbolBlock(mx.sym.Group([grad_op, out]), ipt, net.collect_params())
data = mx.nd.random_uniform(shape=(1, 3, 224, 224))
with autograd.record():
output = net(data)
output[1].backward()
# and you can retrieve grad of "internal"
internal_grad = output[0]
```
😃
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