update lr and bias_grad_times

shixian.shi

2023-05-05 653fffdf29fc77ea9203d0cffdcc760f55a61dd5

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