Feature/asr

[rafaelvp-db]

Initial PR for ASR support

[rafaelvp-db]

hey @SeanNaren just made the PR, would be great if you could take a look and share some insights :)

[SeanNaren]

Hi @rafaelvp-db thanks for making the PR!

There are quite a few pieces missing, hopefully, I can assist in helping you get the right things implemented!

Firstly I don't think your current code is entirely correct (unless I've made a mistake). The Wav2Vec model/dataset/tokenizer are completely different and should probably exist as new classes inherited from TaskTransformer/TransformerDataModule.

What I think would be a good idea is to get this blog post implemented into a TaskTransformer and a TransformerDataModule as you've already outlined: https://huggingface.co/blog/fine-tune-wav2vec2-english

This would involve

• Creating the logic to run the training_step validation_step and test_step in the SpeechRecognitionTransformer. Using the WER metric found in torchmetrics: https://torchmetrics.readthedocs.io/en/stable/text/word_error_rate.html?highlight=WER
• Create an actual dataset using the pre-processing logic and whatnot found in the blog post, putting whatever processing logic in SpeechRecognitionDataModule

Overall I would assume something like this to work:

import pytorch_lightning as pl

from lightning_transformers.task.audio.speech_recognition import (
    SpeechRecognitionDataConfig,
    SpeechRecognitionDataModule,
    SpeechRecognitionTransformer,
)

if __name__ == "__main__":
    model = SpeechRecognitionTransformer("facebook/wav2vec2-base", ctc_loss_reduction="mean", vocab_file="vocab.json")
    dm = SpeechRecognitionDataModule(
        cfg=SpeechRecognitionDataConfig(
            batch_size=1,
            dataset_name="timit_asr",
        ),
        tokenizer=model.tokenizer,
    )
    trainer = pl.Trainer(accelerator="auto", devices="auto", max_epochs=1)

    trainer.fit(model, dm)

[rafaelvp-db]

Thanks for the guidelines @SeanNaren! Let me look into that.

[codecov]

Codecov Report

Merging #251 (a3d8528) into master (9f25baa) will decrease coverage by 1%.
The diff coverage is 58%.

❗ Current head a3d8528 differs from pull request most recent head 45cbab7. Consider uploading reports for the commit 45cbab7 to get more accurate results

@@          Coverage Diff          @@
##           master   #251   +/-   ##
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- Coverage      75%    74%   -1%     
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  Files          73     77    +4     
  Lines        1622   1682   +60     
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+ Hits         1210   1245   +35     
- Misses        412    437   +25     

[SeanNaren]

Hows it going @rafaelvp-db?

The code looks muuuch nicer, amazing job! Anything I can assist with? I notice that the example requires a vocab.json, I'm sure we can YOLO it and use the alphabet.

[stale]

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