Merge pull request #335 from alibaba-damo-academy/dev_lhn2

zhifu gao

2023-04-12 fe5f58e188af47c14ef6d5ff7ab19bd0f42d8da9

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