lucio/xls-r-kyrgiz-cv8

XLS-R-300M Kyrgiz CV8

This model is a fine-tuned version of facebook/wav2vec2-xls-r-300m on the MOZILLA-FOUNDATION/COMMON_VOICE_8_0 - KY dataset. It achieves the following results on the validation set:

• Loss: 0.5497
• Wer: 0.2945
• Cer: 0.0791

Model description

For a description of the model architecture, see facebook/wav2vec2-xls-r-300m

The model vocabulary consists of the cyrillic alphabet with punctuation removed.

The kenlm language model is built using the text of the train and invalidated corpus splits.

Intended uses & limitations

This model is expected to be of some utility for low-fidelity use cases such as:

• Draft video captions
• Indexing of recorded broadcasts

The model is not reliable enough to use as a substitute for live captions for accessibility purposes, and it should not be used in a manner that would infringe the privacy of any of the contributors to the Common Voice dataset nor any other speakers.

Training and evaluation data

The combination of train, dev and other of common voice official splits were used as training data. The half of the official test split was used as validation data, as and the full test set was used for final evaluation.

Training procedure

The featurization layers of the XLS-R model are frozen while tuning a final CTC/LM layer on the Kyrgiz CV8 example sentences. A ramped learning rate is used with an initial warmup phase of 500 steps, a max of 0.0001, and cooling back towards 0 for the remainder of the 8100 steps (300 epochs).

Training hyperparameters

The following hyperparameters were used during training:

• learning_rate: 0.0001
• train_batch_size: 32
• eval_batch_size: 8
• seed: 42
• gradient_accumulation_steps: 4
• total_train_batch_size: 128
• optimizer: Adam with betas=(0.9,0.999) and epsilon=1e-08
• lr_scheduler_type: linear
• lr_scheduler_warmup_steps: 500
• num_epochs: 300.0
• mixed_precision_training: Native AMP

Training results

Training Loss	Epoch	Step	Validation Loss	Wer	Cer
3.1079	18.51	500	2.6795	0.9996	0.9825
0.8506	37.04	1000	0.4323	0.3718	0.0961
0.6821	55.55	1500	0.4105	0.3311	0.0878
0.6091	74.07	2000	0.4281	0.3168	0.0851
0.5429	92.58	2500	0.4525	0.3147	0.0842
0.5063	111.11	3000	0.4619	0.3144	0.0839
0.4661	129.62	3500	0.4660	0.3039	0.0818
0.4353	148.15	4000	0.4695	0.3083	0.0820
0.4048	166.65	4500	0.4909	0.3085	0.0824
0.3852	185.18	5000	0.5074	0.3048	0.0812
0.3567	203.69	5500	0.5111	0.3012	0.0810
0.3451	222.22	6000	0.5225	0.2982	0.0804
0.325	240.73	6500	0.5270	0.2955	0.0796
0.3089	259.25	7000	0.5381	0.2929	0.0793
0.2941	277.76	7500	0.5565	0.2923	0.0794
0.2945	296.29	8000	0.5495	0.2951	0.0789

Framework versions

• Transformers 4.17.0.dev0
• Pytorch 1.10.2+cu102
• Datasets 1.18.3
• Tokenizers 0.11.0