hetong007 commented on issue #11533: Fix image classification scripts and 
Improve Fp16 tutorial
URL: https://github.com/apache/incubator-mxnet/pull/11533#issuecomment-406185114
 
 
   For cifar training, the standard augmentation for benchmark is:
   
   ```python
   mean_rgb = [125.307, 122.961, 113.8575]
   std_rgb = [51.5865, 50.847, 51.255]
   train_data = mx.io.ImageRecordIter(
       path_imgrec         = rec_train,
       path_imgidx         = rec_train_idx,
       preprocess_threads  = num_workers,
       shuffle             = True,
       batch_size          = batch_size,
       
       data_shape          = (3, 32, 32),
       mean_r              = mean_rgb[0],
       mean_g              = mean_rgb[1],
       mean_b              = mean_rgb[2],
       std_r               = std_rgb[0],
       std_g               = std_rgb[1],
       std_b               = std_rgb[2],
       rand_mirror         = True,
       pad                 = 4,
       fill_value          = 0,
       rand_crop           = True,
       max_crop_size       = 32,
       min_crop_size       = 32,
   )
   val_data = mx.io.ImageRecordIter(
       path_imgrec         = rec_val,
       path_imgidx         = rec_val_idx,
       preprocess_threads  = num_workers,
       shuffle             = False,
       batch_size          = batch_size,
       
       data_shape          = (3, 32, 32),
       mean_r              = mean_rgb[0],
       mean_g              = mean_rgb[1],
       mean_b              = mean_rgb[2],
       std_r               = std_rgb[0],
       std_g               = std_rgb[1],
       std_b               = std_rgb[2],
   )
   ```
   
   Can you change accordingly?

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