[GitHub] [incubator-mxnet] sxjscience commented on issue #18373: [Numpy] The symbolic export of BatchNorm is wrong

[GitBox <gi...@apache.org>]

sxjscience commented on issue #18373:
URL: https://github.com/apache/incubator-mxnet/issues/18373#issuecomment-631629163


   I find that issue does not only happen in numpy but also exists in ndarray:
   ```python
   import mxnet as mx
   import json
   import pprint
   #mx.npx.set_np()
   net = mx.gluon.nn.BatchNorm(epsilon=2E-5, axis=2)
   net.hybridize()
   net.initialize()
   a = net(mx.nd.ones((10, 3, 5, 5)))
   net.export('bnorm', 0)
   with open('bnorm-symbol.json') as f:
      dat = json.load(f)
      pprint.pprint(dat)
   ```
   
   Output:
   ```
              {'attrs': {'__profiler_scope__': 'batchnorm0:',
                         'axis': '1',
                         'eps': '1e-05',
                         'fix_gamma': 'False',
                         'momentum': '0.9',
                         'use_global_stats': 'False'},
               'inputs': [[0, 0, 0], [1, 0, 0], [2, 0, 0], [3, 0, 1], [4, 0, 1]],
               'name': 'batchnorm0_fwd',
               'op': 'BatchNorm'}]}
   ```


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