Merge pull request #492 from alibaba-damo-academy/dev_smohan

yhliang

2023-05-11 d2dc3af1a69ee4075bcfc0c83dc0fb8e3fc1db4e

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