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50 changes: 49 additions & 1 deletion egs/gigaspeech/ASR/RESULTS.md
Original file line number Diff line number Diff line change
@@ -1,4 +1,52 @@
## Results
### zipformer (zipformer + pruned stateless transducer, bf16, 90 epochs)

#### 2026-06-22

[zipformer](./zipformer)

- Non-streaming
- normal-scaled model, number of model parameters: 65549011, i.e., 65.55 M
- trained on the `XL` subset, on-the-fly features, no MUSAN augmentation
- bf16 AMP, 8 × H100 80G GPUs

| decoding method | Dev | Test | comment |

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Can you upload the checkpoints to huggingface or modelscope and put a link here to the checkpoints repo?

|-----------------|-------|-------|---------------------|
| greedy_search | 10.52 | 10.58 | --epoch 82 --avg 26 |

The training command is (launched with torchrun; see [run_train_cluster.sh](./zipformer/run_train_cluster.sh)):
```bash
torchrun --nproc_per_node 8 \
./zipformer/train.py \
--num-epochs 90 \
--start-epoch 1 \
--use-bf16 1 \
--exp-dir zipformer/exp \
--causal 0 \
--subset XL \
--max-duration 5000 \
--use-transducer 1 \
--use-ctc 0 \
--on-the-fly-feats 1 \
--enable-musan 0 \
--num-workers 8 \
--prefetch-factor 8 \
--lr-epochs 1
```
`--world-size` is ignored under `torchrun`; train.py reads `WORLD_SIZE`/`RANK`/`LOCAL_RANK` from the env.
The flags above are spelled out, but `--on-the-fly-feats 1`, `--enable-musan 0`, `--num-workers 8` and `--prefetch-factor 8` are now the recipe defaults.

The decoding command is:
```bash
export CUDA_VISIBLE_DEVICES=0
./zipformer/decode.py \
--epoch 82 \
--avg 26 \
--exp-dir ./zipformer/exp \
--max-duration 1000 \
--decoding-method greedy_search
```

### zipformer (zipformer + pruned stateless transducer)

See <https://github.com/k2-fsa/icefall/pull/1254> for more details.
Expand All @@ -16,7 +64,7 @@ The tensorboard log for training is available at

You can use <https://github.com/k2-fsa/sherpa> to deploy it.

| decoding method | test-clean | test-other | comment |
| decoding method | Dev | Test | comment |
|----------------------|------------|------------|--------------------|
| greedy_search | 10.31 | 10.50 | --epoch 30 --avg 9 |
| modified_beam_search | 10.25 | 10.38 | --epoch 30 --avg 9 |
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