VoVAllen opened a new issue #16098: [Bug] Unrecognize parameter shape after 
npx.set_up()
URL: https://github.com/apache/incubator-mxnet/issues/16098
 
 
   ## Description
   In MXNet:
   ```python
   from mxnet.gluon import nn
   print(nn.Dense(32).collect_params())  # weight shape=(32,0)
   ```
   
   After importing dgl:
   ```python
   from mxnet import npx
   npx.set_up()
   from mxnet.gluon import nn
   print(nn.Dense(32).collect_params())  # weight shape=(32,-1)
   ```
   Basically, it is not a problem when creating, training & saving models.
   However, when loading models from files by net.load_parameters(filename), it 
throws errors like:
   shape (32,-1) is incompatible with shape (32, 8).
   So we cannot correctly load the model by using the current API.
   
   Related issue: https://github.com/dmlc/dgl/issues/829

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