[GitHub] GSanchis commented on issue #8669: module.Module and CSVIter

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

GSanchis commented on issue #8669: module.Module and CSVIter
URL: https://github.com/apache/incubator-mxnet/issues/8669#issuecomment-344842083
 
 
   Well, I should have said I [think I] also tried that :)
   
   In fact, I just tried two options: `data_names` and `data_name` (since in your message you actually mention both), but no luck either:
   
   ```
   model = mx.module.Module(context=mx.cpu(0), data_names=['user', 'movie'], symbol=y_pred)
   CSVIter = mx.io.CSVIter(data_csv=f1, data_shape=(2,), label_csv=f2, label_shape=(1,), batch_size=1000, data_name=['user','movie'])
   model.fit(CSVIter, num_epoch=5, optimizer='adam', optimizer_params=(('learning_rate', 0.001),))
   ``` 
   returns
   ```
   Traceback (most recent call last):
     File "<stdin>", line 1, in <module>
     File "/home/german/anaconda3/lib/python3.6/site-packages/mxnet/module/base_module.py", line 460, in fit
       for_training=True, force_rebind=force_rebind)
     File "/home/german/anaconda3/lib/python3.6/site-packages/mxnet/module/module.py", line 400, in bind
       self.data_names, self.label_names, data_shapes, label_shapes)
     File "/home/german/anaconda3/lib/python3.6/site-packages/mxnet/module/base_module.py", line 71, in _parse_data_desc
       _check_names_match(data_names, data_shapes, 'data', True)
     File "/home/german/anaconda3/lib/python3.6/site-packages/mxnet/module/base_module.py", line 63, in _check_names_match
       raise ValueError(msg)
   ValueError: Data provided by data_shapes don't match names specified by data_names ([DataDesc[['user', 'movie'],(1000, 2),<class 'numpy.float32'>,NCHW]] vs. ['user', 'movie'])
   ```
   
   Whereas `data_names` (as the error message seems to indicate), returns:
   ```
   Traceback (most recent call last):
     File "<stdin>", line 1, in <module>
     File "/home/german/anaconda3/lib/python3.6/site-packages/mxnet/module/base_module.py", line 460, in fit
       for_training=True, force_rebind=force_rebind)
     File "/home/german/anaconda3/lib/python3.6/site-packages/mxnet/module/module.py", line 400, in bind
       self.data_names, self.label_names, data_shapes, label_shapes)
     File "/home/german/anaconda3/lib/python3.6/site-packages/mxnet/module/base_module.py", line 71, in _parse_data_desc
       _check_names_match(data_names, data_shapes, 'data', True)
     File "/home/german/anaconda3/lib/python3.6/site-packages/mxnet/module/base_module.py", line 63, in _check_names_match
       raise ValueError(msg)
   ValueError: Data provided by data_shapes don't match names specified by data_names ([DataDesc[data,(1000, 2),<class 'numpy.float32'>,NCHW]] vs. ['user', 'movie'])
   ```
   Which is the same error as above... I.e., the correct parameter seems to be `data_name`, but there's still something missing.
   
   Thanks for your help, Eric!!

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