Merge pull request #6 from alibaba-damo-academy/dev

zhifu gao

2022-12-03 fd278298f5a2ae6261ab6d56576395be6be1676e

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beam_size: 10
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 0.5
lm_weight: 0.7