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Posted to dev@madlib.apache.org by GitBox <gi...@apache.org> on 2021/04/26 20:25:38 UTC

[GitHub] [madlib] fmcquillan99 commented on pull request #564: MLP: Add rmsprop and Adam optimization techniques

fmcquillan99 commented on pull request #564:
URL: https://github.com/apache/madlib/pull/564#issuecomment-827124252


   Elsewhere I have seen different defaults used
   
   e.g., https://keras.io/api/optimizers/adam/ 
   ```
   beta1 = 0.9
   beta2 = 0.999
   epsilon=1e-07
   ```
   
   e.g., https://keras.io/api/optimizers/rmsprop/
   ```
   rho=0.9,
   momentum=0.0
   epsilon=1e-07
   ```
   Is there a reason we have deviated from these values?   e.g., seems we are using epsilon=1e-18


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