Merge pull request #507 from alibaba-damo-academy/dev_lyh

zhifu gao

2023-05-12 595531facf9b8e66ca74d3cbb26b4f89b969ca67

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