Zhicheng Chen 851b438574
[Feature] Support LAMB optimizer. (#591)
* impl lamb

* Add unit tests

* Fix unit test

* Fix unit tests

* Use list instead of tuple in `__all__` according to PEP8

Co-authored-by: mzr1996 <mzr1996@163.com>
2021-12-13 17:24:44 +08:00
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