语言: 泰语 数据集:

• 通用语音 标签:
• 音频
• 自动语音识别
• 语音
• XLSR微调周 许可证: Apache-2.0 模型索引:
• 名称: Sakares的XLSR Wav2Vec2大型泰语模型 结果:
  • 任务: 名称: 语音识别 类型: 自动语音识别 数据集: 名称: 通用语音泰语 类型: common_voice 参数: th
    指标:
    • 名称: 测试WER 类型: wer 值: 44.46

Wav2Vec2-Large-XLSR-53-泰语

基于facebook/wav2vec2-large-xlsr-53在泰语通用语音数据集上微调的模型。使用该模型时，请确保语音输入采样率为16kHz。

使用方法

该模型可直接使用（无需语言模型）如下：

import torch
import torchaudio
from datasets import load_dataset
from transformers import Wav2Vec2ForCTC, Wav2Vec2Processor
from pythainlp.tokenize import word_tokenize

test_dataset = load_dataset("common_voice", "th", split="test[:2%]")

processor = Wav2Vec2Processor.from_pretrained("sakares/wav2vec2-large-xlsr-thai-demo")
model = Wav2Vec2ForCTC.from_pretrained("sakares/wav2vec2-large-xlsr-thai-demo")

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

## 泰语NLP库详情请查阅 https://pythainlp.github.io/docs/2.2/api/tokenize.html
def th_tokenize(batch):
    batch["sentence"] = " ".join(word_tokenize(batch["sentence"], engine="newmm"))
    return batch

# 数据集预处理
# 需将音频文件读取为数组
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).map(th_tokenize)
inputs = processor(test_dataset["speech"][:2], 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("预测结果:", processor.batch_decode(predicted_ids))
print("参考文本:", test_dataset["sentence"][:2])

使用脚本此处

评估

可在通用语音泰语测试数据上按如下方式评估模型：

import torch
import torchaudio
from datasets import load_dataset, load_metric
from transformers import Wav2Vec2ForCTC, Wav2Vec2Processor
from pythainlp.tokenize import word_tokenize
import re

test_dataset = load_dataset("common_voice", "th", split="test")
wer = load_metric("wer")

processor = Wav2Vec2Processor.from_pretrained("sakares/wav2vec2-large-xlsr-thai-demo")
model = Wav2Vec2ForCTC.from_pretrained("sakares/wav2vec2-large-xlsr-thai-demo")
model.to("cuda")

chars_to_ignore_regex = '[\,\?\.\!\-\;\:\"\“]'
resampler = torchaudio.transforms.Resample(48_000, 16_000)

## 泰语NLP库详情请查阅 https://pythainlp.github.io/docs/2.2/api/tokenize.html
def th_tokenize(batch):
    batch["sentence"] = " ".join(word_tokenize(batch["sentence"], engine="newmm"))
    return batch

# 数据集预处理
# 需将音频文件读取为数组
def speech_file_to_array_fn(batch):
	batch["sentence"] = re.sub(chars_to_ignore_regex, '', batch["sentence"]).lower()
	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).map(th_tokenize)

# 评估函数
def evaluate(batch):
	inputs = processor(batch["speech"], sampling_rate=16_000, return_tensors="pt", padding=True)

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

	pred_ids = torch.argmax(logits, dim=-1)
	batch["pred_strings"] = processor.batch_decode(pred_ids)
	return batch

result = test_dataset.map(evaluate, batched=True, batch_size=8)

print("WER: {:2f}".format(100 * wer.compute(predictions=result["pred_strings"], references=result["sentence"])))

测试结果: 44.46% 评估脚本此处

训练

使用了通用语音的train和validation数据集进行训练。

训练脚本可在此处查看