nswamy commented on issue #9858: softsign activation function
URL: https://github.com/apache/incubator-mxnet/pull/9858#issuecomment-367788415
   @piiswrong @szha 
   Some background:
   One of the customer is using MXNet-Scala Interface of 0.11 version. They are 
soon to go live with their product(in the next 2 weeks), they use  a CustomOp 
to perform Softsign in which I and @yzhliu suspect the leak to be coming from. 
We spent quite a bit of time trying to analyze the code and debug the issue, 
however we haven't been able to nail down where it is coming from. In order to 
help the customer launch their product, I am providing this activation function 
on 0.11.
   I understand this does not follow semver, etc., The customer has been very 
patiently working with me and Yizhi and I see it as a big win for MXNet. They 
certainly want to upgrade their MXNet to the  latest but not before their 
product launch. 
   I hope that makes sense. 
   @szha, the reason to have this as a separate commit is that the activation 
function has gone through some refactor, so cherry picking does not work for 

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