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128 lines
3.9 KiB
Markdown
128 lines
3.9 KiB
Markdown
<!--Copyright 2025 The HuggingFace Inc. team. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
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specific language governing permissions and limitations under the License.
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⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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rendered properly in your Markdown viewer.
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-->
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*This model was published in HF papers on 2020-05-16 and contributed to Hugging Face Transformers on 2025-12-05.*
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<div class="flex flex-wrap space-x-1">
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<img alt="SDPA" src="https://img.shields.io/badge/SDPA-DE3412?style=flat&logo=pytorch&logoColor=white">
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</div>
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# LASR
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## Overview
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LASR is the architecture behind MedASR, a speech-to-text model from Google Health AI pre-trained for medical dictation. It's based on the [Conformer architecture](https://huggingface.co/papers/2005.08100) and designed as a starting point for developers building dictation tools with medical terminology, like radiology dictation. MedASR performs well on medical audio but can struggle with terms outside its training data, such as non-standard medication names or temporal references (dates, times, or durations).
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## Usage
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### Basic usage
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<hfoptions id="usage">
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<hfoption id="Pipeline">
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```python
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from transformers import pipeline
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pipe = pipeline("automatic-speech-recognition", model="google/medasr")
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out = pipe("path/to/audio.mp3")
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print(out)
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```
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</hfoption>
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<hfoption id="AutoModel">
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```python
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from datasets import Audio, load_dataset
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from transformers import AutoModelForCTC, AutoProcessor
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processor = AutoProcessor.from_pretrained("google/medasr")
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model = AutoModelForCTC.from_pretrained("google/medasr", device_map="auto")
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ds = load_dataset("hf-internal-testing/librispeech_asr_dummy", "clean", split="validation")
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ds = ds.cast_column("audio", Audio(sampling_rate=processor.feature_extractor.sampling_rate))
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speech_samples = [el['array'] for el in ds["audio"][:5]]
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inputs = processor(speech_samples, sampling_rate=processor.feature_extractor.sampling_rate)
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inputs.to(model.device, dtype=model.dtype)
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outputs = model.generate(**inputs)
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print(processor.batch_decode(outputs))
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```
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</hfoption>
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</hfoptions>
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### Training
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The example below prepares a batch of audio and text, passes it through the LASR/MedASR model, and computes the training loss.
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```python
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from datasets import Audio, load_dataset
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from transformers import AutoModelForCTC, AutoProcessor
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# Load processor and model
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processor = AutoProcessor.from_pretrained("google/medasr")
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model = AutoModelForCTC.from_pretrained("google/medasr", device_map="auto")
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# Load a small example dataset and prepare batch
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ds = load_dataset("hf-internal-testing/librispeech_asr_dummy", "clean", split="validation")
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ds = ds.cast_column("audio", Audio(sampling_rate=processor.feature_extractor.sampling_rate))
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speech_samples = [el["array"] for el in ds["audio"][:5]]
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text_samples = [el for el in ds["text"][:5]]
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# Passing `text` to the processor will prepare the `labels`
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inputs = processor(audio=speech_samples, text=text_samples, sampling_rate=processor.feature_extractor.sampling_rate)
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inputs.to(device, dtype=model.dtype)
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outputs = model(**inputs)
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outputs.loss.backward()
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```
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## LasrTokenizer
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[[autodoc]] LasrTokenizer
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## LasrFeatureExtractor
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[[autodoc]] LasrFeatureExtractor
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- __call__
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## LasrProcessor
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[[autodoc]] LasrProcessor
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- __call__
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- batch_decode
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- decode
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## LasrEncoderConfig
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[[autodoc]] LasrEncoderConfig
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## LasrCTCConfig
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[[autodoc]] LasrCTCConfig
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## LasrEncoder
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[[autodoc]] LasrEncoder
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## LasrForCTC
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[[autodoc]] LasrForCTC
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