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Posted to commits@mxnet.apache.org by GitBox <gi...@apache.org> on 2018/11/22 10:21:24 UTC

[GitHub] zerolxf opened a new issue #13372: Support sparse as return in topK?

zerolxf opened a new issue #13372: Support sparse as return in topK? 
URL: https://github.com/apache/incubator-mxnet/issues/13372
 
 
   
   
   ## Description
   why not support sparse as return in [topK](https://mxnet.incubator.apache.org/api/python/symbol/symbol.html#mxnet.symbol.topk)? 
   
   When k is relatively small, it is very sparse.
   It is more efficient than "mask" and simpler than "both".Sparse in distributed transmission saves time.
   I want to implement the optimizer described in the paper *Sparsified SGD with Memory*, available at https://arxiv.org/abs/1809.07599
   

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