sshuair 7fbdd6f197 add metric mFscore (#509)
* add mFscore and refactor the metrics return value

* fix linting

* some docstring and name fix
2021-04-30 11:34:57 -07:00
..
2020-07-10 02:39:01 +08:00
2021-04-30 11:34:57 -07:00