icefall/egs/swbd/ASR/RESULTS.md

Results

Switchboard BPE training results (Conformer-CTC)

2023-06-26

The best WER, as of 2023-06-26, for the Switchboard is below

Results using HLG decoding + n-gram LM rescoring + attention decoder rescoring:

	eval2000	rt03
conformer_ctc	33.37	35.06

Scale values used in n-gram LM rescoring and attention rescoring for the best WERs are:

eval2000

ngram_lm_scale	attention_scale
0.3	2.5

rt03

ngram_lm_scale	attention_scale
0.7	1.3

To reproduce the above result, use the following commands for training:

cd egs/swbd/ASR
./prepare.sh
export CUDA_VISIBLE_DEVICES="0,1"
./conformer_ctc/train.py \
  --max-duration 120 \
  --num-workers 8 \
  --enable-musan False \
  --world-size 2 \

and the following command for decoding:

./conformer_ctc/decode.py \
  --epoch 55 \
  --avg 1 \
  --max-duration 50