lucio/xls-r-uzbek-cv8

XLS-R-300M Uzbek CV8

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

• Loss: 0.3063
• Wer: 0.3852
• Cer: 0.0777

Model description

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

The model vocabulary consists of the Modern Latin alphabet for Uzbek, with punctuation removed. Note that the characters <‘> and <’> do not count as punctuation, as <‘> modifies <o> and <g>, and <’> indicates the glottal stop or a long vowel.

The decoder uses a kenlm language model built on common_voice text.

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 50% of the train common voice official split was used as training data. The 50% of the official dev split was used as validation data, and the full test set was used for final evaluation of the model without LM, while the model with LM was evaluated only on 500 examples from the test set.

The kenlm language model was compiled from the target sentences of the train + other dataset splits.

Training hyperparameters

The following hyperparameters were used during training:

• learning_rate: 3e-05
• 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: 100.0
• mixed_precision_training: Native AMP

Training results

Training Loss	Epoch	Step	Validation Loss	Wer	Cer
3.1401	3.25	500	3.1146	1.0	1.0
2.7484	6.49	1000	2.2842	1.0065	0.7069
1.0899	9.74	1500	0.5414	0.6125	0.1351
0.9465	12.99	2000	0.4566	0.5635	0.1223
0.8771	16.23	2500	0.4212	0.5366	0.1161
0.8346	19.48	3000	0.3994	0.5144	0.1102
0.8127	22.73	3500	0.3819	0.4944	0.1051
0.7833	25.97	4000	0.3705	0.4798	0.1011
0.7603	29.22	4500	0.3661	0.4704	0.0992
0.7424	32.47	5000	0.3529	0.4577	0.0957
0.7251	35.71	5500	0.3410	0.4473	0.0928
0.7106	38.96	6000	0.3401	0.4428	0.0919
0.7027	42.21	6500	0.3355	0.4353	0.0905
0.6927	45.45	7000	0.3308	0.4296	0.0885
0.6828	48.7	7500	0.3246	0.4204	0.0863
0.6706	51.95	8000	0.3250	0.4233	0.0868
0.6629	55.19	8500	0.3264	0.4159	0.0849
0.6556	58.44	9000	0.3213	0.4100	0.0835
0.6484	61.69	9500	0.3182	0.4124	0.0837
0.6407	64.93	10000	0.3171	0.4050	0.0825
0.6375	68.18	10500	0.3150	0.4039	0.0822
0.6363	71.43	11000	0.3129	0.3991	0.0810
0.6307	74.67	11500	0.3114	0.3986	0.0807
0.6232	77.92	12000	0.3103	0.3895	0.0790
0.6216	81.17	12500	0.3086	0.3891	0.0790
0.6174	84.41	13000	0.3082	0.3881	0.0785
0.6196	87.66	13500	0.3059	0.3875	0.0782
0.6174	90.91	14000	0.3084	0.3862	0.0780
0.6169	94.16	14500	0.3070	0.3860	0.0779
0.6166	97.4	15000	0.3066	0.3855	0.0778

Framework versions

• Transformers 4.16.2
• Pytorch 1.10.2+cu102
• Datasets 1.18.3
• Tokenizers 0.11.0