Merge pull request #456 from alibaba-damo-academy/dev_zc

zhifu gao

2023-05-05 06b4aab43bea7cd5be30f163acc1b68d5527d7db

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