icefall/egs/multi_ja_en/ASR/RESULTS.md

Results

Zipformer

Non-streaming

The training command is:

./zipformer/train.py \
  --bilingual 1 \
  --world-size 4 \
  --num-epochs 30 \
  --start-epoch 1 \
  --use-fp16 1 \
  --exp-dir zipformer/exp \
  --max-duration 600

The decoding command is:

./zipformer/decode.py \
    --epoch 28 \
    --avg 15 \
    --exp-dir ./zipformer/exp \
    --max-duration 600 \
    --decoding-method greedy_search

Word Error Rates (WERs) listed below:

Datasets	ReazonSpeech	ReazonSpeech	LibriSpeech	LibriSpeech
Zipformer WER (%)	dev	test	test-clean	test-other
greedy_search	5.9	4.07	3.46	8.35
modified_beam_search	4.87	3.61	3.28	8.07
fast_beam_search	41.04	36.59	16.14	22.0

Character Error Rates (CERs) for Japanese listed below:

Decoding Method	In-Distribution CER	JSUT	CommonVoice	TEDx
greedy search	12.56	6.93	9.75	9.67
modified beam search	11.59