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Posted to reviews@spark.apache.org by hhbyyh <gi...@git.apache.org> on 2015/04/09 12:07:00 UTC

[GitHub] spark pull request: [MLLIB] [spark-2352] Implementation of an Arti...

Github user hhbyyh commented on the pull request:

    https://github.com/apache/spark/pull/1290#issuecomment-91181467
  
    @debasish83 I'm interested in the Graphx-based NN and implemented a prototype. Yet I found both feed forward and back propagation are slow (unacceptably) due to `aggregateMessages` and `joinVertices`, which seems to be inevitable, and will become worse if layer count increases. 
    
    Is there any other Graph based attempt available? or maybe some suggestion. Thanks.


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