Merge pull request #319 from alibaba-damo-academy/dev_lhn

zhifu gao

2023-03-30 21b0b0d2d2fefe00fbd9351a3375d93d10a0f420

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