[fix] better solution for handling empty result (#1796)

Xingchen Song(宋星辰)

2024-06-11 0bd1a4d6a9893e45438505514a063d9deee91f21

 examples/industrial_data_pretraining/seaco_paraformer/finetune.sh

@@ -59,6 +59,7 @@
++train_conf.resume=false \
++train_conf.validate_interval=2000 \
++train_conf.save_checkpoint_interval=2000 \
++train_conf.avg_keep_nbest_models_type='loss' \
++train_conf.keep_nbest_models=20 \
++optim_conf.lr=0.0002 \
++output_dir="${output_dir}" &> ${log_file}