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LibriSpeech

Conformer

train: Epoch 70, 4 V100-32G, best avg: 20

Model Params Config Augmentation Test set Decode method Loss WER
conformer 47.63 M conf/conformer.yaml spec_aug test-clean attention 6.433612394332886 0.039771
conformer 47.63 M conf/conformer.yaml spec_aug test-clean ctc_greedy_search 6.433612394332886 0.040342
conformer 47.63 M conf/conformer.yaml spec_aug test-clean ctc_prefix_beam_search 6.433612394332886 0.040342
conformer 47.63 M conf/conformer.yaml spec_aug test-clean attention_rescoring 6.433612394332886 0.033761

Conformer Streaming

Model Params Config Augmentation Test set Decode method Chunk Size & Left Chunks Loss WER
conformer 47.63 M conf/chunk_conformer.yaml spec_aug + shift test-clean attention 16, -1 7.11 0.063193
conformer 47.63 M conf/chunk_conformer.yaml spec_aug + shift test-clean ctc_greedy_search 16, -1 7.11 0.082394
conformer 47.63 M conf/chunk_conformer.yaml spec_aug + shift test-clean ctc_prefix_beam_search 16, -1 7.11 0.082156
conformer 47.63 M conf/chunk_conformer.yaml spec_aug + shift test-clean attention_rescoring 16, -1 7.11 0.071000

Transformer

train: Epoch 120, 4 V100-32G, 27 Day, best avg: 10

Model Params Config Augmentation Test set Decode method Loss WER
transformer 32.52 M conf/transformer.yaml spec_aug test-clean attention 6.382194232940674 0.049661
transformer 32.52 M conf/transformer.yaml spec_aug test-clean ctc_greedy_search 6.382194232940674 0.049566
transformer 32.52 M conf/transformer.yaml spec_aug test-clean ctc_prefix_beam_search 6.382194232940674 0.049585
transformer 32.52 M conf/transformer.yaml spec_aug test-clean attention_rescoring 6.382194232940674 0.038135