add transformerLM egs(aishell2)

wucong.lyb

2023-02-21 526d2e544e92b474eaa082ad96735e01ceccb2cc

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