Merge pull request #463 from alibaba-damo-academy/dev_wjm3

zhifu gao

2023-05-05 3da99b35f14aedfe6d4987b1f8037c5c61343326

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