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XLS-R-based CTC model with 5-gram language model from Common Voice

This model is a version of facebook/wav2vec2-xls-r-2b-22-to-16 fine-tuned mainly on the MOZILLA-FOUNDATION/COMMON_VOICE_8_0 - NL dataset (see details below), on which a small 5-gram language model is added based on the Common Voice training corpus. This model achieves the following results on the evaluation set (of Common Voice 8.0):

  • Wer: 0.0669
  • Cer: 0.0197

Model description

The model takes 16kHz sound input, and uses a Wav2Vec2ForCTC decoder with 48 letters to output the final result.

To improve accuracy, a beam decoder is used; the beams are scored based on 5-gram language model trained on the Common Voice 8 corpus.

Intended uses & limitations

This model can be used to transcribe Dutch or Flemish spoken dutch to text (without punctuation).

Training and evaluation data

  1. The model was initialized with the 2B parameter model from Facebook.
  2. The model was then trained 2000 iterations (batch size 32) on the dutch configuration of the multilingual_librispeech dataset.
  3. The model was then trained 2000 iterations (batch size 32) on the nl configuration of the common_voice_8_0 dataset.
  4. The model was then trained 6000 iterations (batch size 32) on the cgn dataset.
  5. The model was then trained 6000 iterations (batch size 32) on the nl configuation of the common_voice_8_0 dataset.

Framework versions

  • Transformers 4.17.0.dev0
  • Pytorch 1.10.2+cu102
  • Datasets 1.18.2.dev0
  • Tokenizers 0.11.0
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Datasets used to train FremyCompany/xls-r-nl-v1-cv8-lm

Evaluation results