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* Add pruned_transducer_stateless7 for Aishell * update README.md * update comments and small fixes
25 lines
1.6 KiB
Markdown
25 lines
1.6 KiB
Markdown
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# Introduction
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Please refer to <https://icefall.readthedocs.io/en/latest/recipes/Non-streaming-ASR/aishell/index.html>
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for how to run models in this recipe.
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# Transducers
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There are various folders containing the name `transducer` in this folder.
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The following table lists the differences among them.
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| | Encoder | Decoder | Comment |
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|------------------------------------|-----------|--------------------|-----------------------------------------------------------------------------------|
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| `transducer_stateless` | Conformer | Embedding + Conv1d | with `k2.rnnt_loss` |
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| `transducer_stateless_modified` | Conformer | Embedding + Conv1d | with modified transducer from `optimized_transducer` |
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| `transducer_stateless_modified-2` | Conformer | Embedding + Conv1d | with modified transducer from `optimized_transducer` + extra data |
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| `pruned_transducer_stateless3` | Conformer (reworked) | Embedding + Conv1d | pruned RNN-T + reworked model with random combiner + using aidatatang_20zh as extra data|
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| `pruned_transducer_stateless7` | Zipformer | Embedding | pruned RNN-T + zipformer encoder + stateless decoder with context-size 1 |
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The decoder in `transducer_stateless` is modified from the paper
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[Rnn-Transducer with Stateless Prediction Network](https://ieeexplore.ieee.org/document/9054419/).
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We place an additional Conv1d layer right after the input embedding layer.
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