[jira] [Created] (HIVEMALL-230) Revise Optimizer Implementation

[Makoto Yui (JIRA)]

Makoto Yui created HIVEMALL-230:
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             Summary: Revise Optimizer Implementation
                 Key: HIVEMALL-230
                 URL: https://issues.apache.org/jira/browse/HIVEMALL-230
             Project: Hivemall
          Issue Type: Improvement
    Affects Versions: 0.5.2
            Reporter: Makoto Yui
            Assignee: Makoto Yui
             Fix For: 0.6.0


[Learning rate scheme of 
Adam|[https://github.com/apache/incubator-hivemall/blame/bc06c93d817e67973ca923bca1cf583e6db65440/core/src/main/java/hivemall/optimizer/Optimizer.java#L74]|https://github.com/apache/incubator-hivemall/blame/bc06c93d817e67973ca923bca1cf583e6db65440/core/src/main/java/hivemall/optimizer/Optimizer.java#L74]
 should be revised to use the original scheme.

[https://gyazo.com/bf66db3de38b7c91ee1710796f679e49]
 [https://openreview.net/pdf?id=ryQu7f-RZ]

[https://github.com/chainer/chainer/blob/master/chainer/optimizers/adam.py#L30]
 [https://github.com/keras-team/keras/blob/master/keras/optimizers.py#L330]
 
[https://github.com/tensorflow/tensorflow/blob/master/tensorflow/core/kernels/training_ops.cc#L338]



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