README.md

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datasets: - mozilla-foundation/common_voice_8_0 language: cs license: apache-2.0 metrics: - wer model-index:

name: "Czech comodoro Wav2Vec2 XLSR 300M CV8"

- results: dataset: args: cs name: "Common Voice 8.0 cs" type: mozilla-foundation/common_voice_8_0 metrics: type: wer value: 0.47455377483706096 task: name: "Speech Recognition" type: automatic-speech-recognition tags:

• generated_from_trainer
• audio
• automatic-speech-recognition
• speech
• xlsr-fine-tuning-week

wav2vec2-xls-r-300m-cs-cv8

This model is a fine-tuned version of facebook/wav2vec2-xls-r-300m on the common_voice 8.0 dataset. It achieves the following results on the evaluation set:

• WER: 0.47455377483706096
• CER: 0.10877155235645618

Model description

Fine-tuned facebook/wav2vec2-large-xlsr-53 on Czech using the Common Voice dataset. When using this model, make sure that your speech input is sampled at 16kHz.

The model can be used directly (without a language model) as follows:

import torch
import torchaudio
from datasets import load_dataset
from transformers import Wav2Vec2ForCTC, Wav2Vec2Processor

test_dataset = load_dataset("mozilla-foundation/common_voice_8_0", "cs", split="test[:2%]")

processor = Wav2Vec2Processor.from_pretrained("comodoro/wav2vec2-xls-r-300m-cs-cv8")
model = Wav2Vec2ForCTC.from_pretrained("comodoro/wav2vec2-xls-r-300m-cs-cv8")

resampler = torchaudio.transforms.Resample(48_000, 16_000)

# Preprocessing the datasets.
# We need to read the aduio files as arrays
def speech_file_to_array_fn(batch):
    speech_array, sampling_rate = torchaudio.load(batch["path"])
    batch["speech"] = resampler(speech_array).squeeze().numpy()
    return batch

test_dataset = test_dataset.map(speech_file_to_array_fn)
inputs = processor(test_dataset[:2]["speech"], sampling_rate=16_000, return_tensors="pt", padding=True)

with torch.no_grad():
    logits = model(inputs.input_values, attention_mask=inputs.attention_mask).logits

predicted_ids = torch.argmax(logits, dim=-1)

print("Prediction:", processor.batch_decode(predicted_ids))
print("Reference:", test_dataset[:2]["sentence"])

Evaluation

The model can be evaluated using the attached eval.py script.

Training and evaluation data

The Common Voice 8.0 train and validation datasets were used for training

Training procedure

Training hyperparameters

The following hyperparameters were used during training:

• learning_rate: 7e-05
• train_batch_size: 32
• eval_batch_size: 8
• seed: 42
• gradient_accumulation_steps: 20
• total_train_batch_size: 640
• optimizer: Adam with betas=(0.9,0.999) and epsilon=1e-08
• lr_scheduler_type: linear
• lr_scheduler_warmup_steps: 500
• num_epochs: 150
• mixed_precision_training: Native AMP

Training results

Training Loss	Epoch	Step	Validation Loss	Wer	Cer
7.2926	8.06	250	3.8497	1.0	1.0
3.417	16.13	500	3.2852	1.0	0.9857
2.0264	24.19	750	0.7099	0.7342	0.1768
0.4018	32.25	1000	0.6188	0.6415	0.1551
0.2444	40.32	1250	0.6632	0.6362	0.1600
0.1882	48.38	1500	0.6070	0.5783	0.1388
0.153	56.44	1750	0.6425	0.5720	0.1377
0.1214	64.51	2000	0.6363	0.5546	0.1337
0.1011	72.57	2250	0.6310	0.5222	0.1224
0.0879	80.63	2500	0.6353	0.5258	0.1253
0.0782	88.7	2750	0.6078	0.4904	0.1127
0.0709	96.76	3000	0.6465	0.4960	0.1154
0.0661	104.82	3250	0.6622	0.4945	0.1166
0.0616	112.89	3500	0.6440	0.4786	0.1104
0.0579	120.95	3750	0.6815	0.4887	0.1144
0.0549	129.03	4000	0.6603	0.4780	0.1105
0.0527	137.09	4250	0.6652	0.4749	0.1090
0.0506	145.16	4500	0.6958	0.4846	0.1133

Framework versions

• Transformers 4.16.0.dev0
• Pytorch 1.10.1+cu102
• Datasets 1.17.1.dev0
• Tokenizers 0.11.0