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Update README.md

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@@ -9,4 +9,54 @@ tags:
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  license: apache-2.0
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  ---
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- To fill...
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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  license: apache-2.0
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  ---
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+ ## Evaluation on Common Voice DE Test
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+ ```python
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+ import torchaudio
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+ from datasets import load_dataset, load_metric
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+ from transformers import (
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+ Wav2Vec2ForCTC,
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+ Wav2Vec2Processor,
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+ )
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+ import torch
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+ import re
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+ import sys
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+
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+ model_name = "facebook/wav2vec2-large-xlsr-53-german"
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+ device = "cuda"
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+
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+ chars_to_ignore_regex = '[\,\?\.\!\-\;\:\"]' # noqa: W605
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+
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+ model = Wav2Vec2ForCTC.from_pretrained(model_name).to(device)
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+ processor = Wav2Vec2Processor.from_pretrained(model_name)
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+
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+ ds = load_dataset("common_voice", "de", split="test", data_dir="./cv-corpus-6.1-2020-12-11")
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+
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+ resampler = torchaudio.transforms.Resample(orig_freq=48_000, new_freq=16_000)
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+
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+ def map_to_array(batch):
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+ speech, _ = torchaudio.load(batch["path"])
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+ batch["speech"] = resampler.forward(speech.squeeze(0)).numpy()
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+ batch["sampling_rate"] = resampler.new_freq
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+ batch["sentence"] = re.sub(chars_to_ignore_regex, '', batch["sentence"]).lower().replace("’", "'")
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+ return batch
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+
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+ ds = ds.map(map_to_array)
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+
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+ def map_to_pred(batch):
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+ features = processor(batch["speech"], sampling_rate=batch["sampling_rate"][0], padding=True, return_tensors="pt")
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+ input_values = features.input_values.to(device)
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+ attention_mask = features.attention_mask.to(device)
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+ with torch.no_grad():
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+ logits = model(input_values, attention_mask=attention_mask).logits
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+ pred_ids = torch.argmax(logits, dim=-1)
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+ batch["predicted"] = processor.batch_decode(pred_ids)
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+ batch["target"] = batch["sentence"]
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+ return batch
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+
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+ result = ds.map(map_to_pred, batched=True, batch_size=16, remove_columns=list(ds.features.keys()))
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+
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+ wer = load_metric("wer")
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+
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+ print(wer.compute(predictions=result["predicted"], references=result["target"]))
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+ ```
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+ **Result**: 18.5 %