Jiayi Weng 926ec0b9b1
update save_fn in trainer (#459)
- collector.collect() now returns 4 extra keys: rew/rew_std/len/len_std (previously this work is done in logger)
- save_fn() will be called at the beginning of trainer
2021-10-13 21:25:24 +08:00
..
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2021-10-13 21:25:24 +08:00