nudles commented on pull request #697:
URL: https://github.com/apache/singa/pull/697#issuecomment-630066505


   > 
   > 
   > how about this scheme, `{"name": {"param": [0,...]}`, it should be easier 
to restore params/states:
   > 
   > ```
   > {'l1': {'W': [[ 0.09014801 -0.03559005]
   >  [-1.6343217  -1.0570787 ]
   >  [ 1.3426386   0.49866426]
   >  [ 0.27287227 -0.49320117]], 'b': [0. 0.]}}
   > ```
   
   Is it a recursive dict?
   One problem is readability, another problem is with Optimizer, which may 
store the first and second order moment of each param. Then we need a python 
dict with the key as the param name. Therefore, we need a unique name for each 
param. 
   `get_param` and `get_state` should return a flat dict.


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