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# LibriSpeech
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## Data
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| Data Subset | Duration in Seconds |
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| data/manifest.train | 0.83s ~ 29.735s |
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| data/manifest.dev | 1.065 ~ 35.155s |
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| data/manifest.test-clean | 1.285s ~ 34.955s |
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| Model | Params | Config | Augmentation| Loss |
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| --- | --- | --- | --- |
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| transformer | 32.52 M | conf/transformer.yaml | spec_aug | 6.3197922706604 |
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## Conformer
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| Model | Params | Config | Augmentation| Test set | Decode method | Loss | WER |
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| --- | --- | --- | --- | --- | --- | --- | --- |
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| conformer | 47.63 M | conf/conformer.yaml | spec_aug + shift | test-clean | attention | - | - |
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| conformer | 47.63 M | conf/conformer.yaml | spec_aug + shift | test-clean | ctc_greedy_search | | |
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| conformer | 47.63 M | conf/conformer.yaml | spec_aug + shift | test-clean | ctc_prefix_beam_search | | |
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| conformer | 47.63 M | conf/conformer.yaml | spec_aug + shift | test-clean | attention_rescoring | | |
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### Test w/o length filter
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| Model | Params | Config | Augmentation| Test set | Decode method | Loss | WER |
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| --- | --- | --- | --- | --- | --- | --- | --- |
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| conformer | 47.63 M | conf/conformer.yaml | spec_aug + shift | test-clean-all | attention | | |
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## Chunk Conformer
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| Model | Params | Config | Augmentation| Test set | Decode method | Chunk Size & Left Chunks | Loss | WER |
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| --- | --- | --- | --- | --- | --- | --- | --- | --- |
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| conformer | 47.63 M | conf/chunk_conformer.yaml | spec_aug + shift | test-clean | attention | 16, -1 | | |
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| conformer | 47.63 M | conf/chunk_conformer.yaml | spec_aug + shift | test-clean | ctc_greedy_search | 16, -1 | | |
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| conformer | 47.63 M | conf/chunk_conformer.yaml | spec_aug + shift | test-clean | ctc_prefix_beam_search | 16, -1 | | - |
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| conformer | 47.63 M | conf/chunk_conformer.yaml | spec_aug + shift | test-clean | attention_rescoring | 16, -1 | | - |
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## Transformer
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| Model | Params | Config | Augmentation| Test set | Decode method | Loss | WER |
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| --- | --- | --- | --- | --- | --- | --- | --- |
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| transformer | 32.52 M | conf/transformer.yaml | spec_aug + shift | test-clean | attention | | |
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### Test w/o length filter
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| Model | Params | Config | Augmentation| Test set | Decode method | Loss | WER |
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| --- | --- | --- | --- | --- | --- | --- | --- |
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| transformer | 32.52 M | conf/transformer.yaml | spec_aug + shift | test-clean-all | attention | | |
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| Test Set | Decode Method | #Snt | #Wrd | Corr | Sub | Del | Ins | Err | S.Err |
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| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
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| test-clean | attention | 2620 | 52576 | 96.4 | 2.5 | 1.1 | 0.4 | 4.0 | 34.7 |
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| test-clean | ctc_greedy_search | 2620 | 52576 | 95.9 | 3.7 | 0.4 | 0.5 | 4.6 | 48.0 |
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| test-clean | ctc_prefix_beamsearch | 2620 | 52576 | 95.9 | 3.7 | 0.4 | 0.5 | 4.6 | 47.6 |
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| test-clean | attention_rescore | 2620 | 52576 | 96.8 | 2.9 | 0.3 | 0.4 | 3.7 | 38.0 |
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