README.md

# SAP²-ASR Dataset

This dataset is designed for **SAP² (Speech-Aware Long Context Pruning and Integration)** research in contextualized automatic speech recognition (ASR).

## 📖 Introduction

SAP² is a novel framework for contextualized automatic speech recognition that dynamically prunes and integrates relevant contextual keywords. This method addresses the challenge of leveraging long-context information in domain-specific scenarios (e.g., conference presentations) where extensive OCR-derived textual contexts contain both relevant information and considerable noise.

### Key Features

- **Speech-Aware Context Pruning**: Dynamically filters OCR-derived textual contexts to retain only keywords directly relevant to speech content
- **Cross-Modal Context Compression**: Uses Speech-Driven Attention-based Pooling to compress extensive textual inputs into concise, speech-relevant context embeddings
- **State-of-the-Art Performance**: Achieves WER of 7.71% on SlideSpeech and 1.12% on LibriSpeech, with a 41.1% relative improvement in biased keyword recognition over non-contextual baselines

## 📊 Dataset Structure

This dataset contains two main sub-datasets:

### SlideSpeech

- **Source**: SlideSpeech is a large-scale audio-visual corpus enriched with slides, containing 1,705 videos with 1,000+ hours of audio, including 473 hours of high-quality transcribed speech
- **Data Format**: JSON format containing audio paths and conversational format with contextual keywords
- **Directory Structure**:
  - `slidespeech_L95/`: Original data
  - `slidespeech_L95_filter/`: Filtered data
  - `slidespeech_L95_5slides/`: 5-slide version
  - `slidespeech_L95_multitask/`: Multi-task version

### LibriSpeech

- **Source**: LibriSpeech is a large-scale corpus of read English speech, derived from audiobooks in the LibriVox project
- **Data Format**: JSON format with different configurations for training, validation, and test sets
- **Directory Structure**:
  - `train-clean-460_*.json`: Training set (clean, 460 hours)
  - `train-other-500_*.json`: Training set (other, 500 hours)
  - `dev-clean_*.json`, `dev-other_*.json`: Validation sets
  - `test-clean_*.json`, `test-other_*.json`: Test sets (various sizes: 100, 500, 1000, 2000 samples)

### Data Format Example

```json
{
  "messages": [
    {
      "role": "user",
      "content": "<audio>/path/to/audio.wav</audio>Transcribe speech to text according to keywords may appear in the utterance. Possible keywords are: <|startofcontext|>keyword1 keyword2 keyword3<|endofcontext|>"
    },
    {
      "role": "assistant",
      "content": "transcribed text"
    }
  ],
  "audios": "/path/to/audio.wav"
}
```

**Key Tokens**:
- `<|startofcontext|>` and `<|endofcontext|>`: Special tokens for marking contextual keywords
- `<audio>...</audio>`: Audio file path token

## 🚀 Usage

### Loading the Dataset

```python
import json

# Load SlideSpeech dataset
with open('slidespeech/slidespeech_L95_filter/train.json', 'r') as f:
    slidespeech_train = json.load(f)

# Load LibriSpeech dataset
with open('librispeech/train-clean-460_filter.json', 'r') as f:
    librispeech_train = json.load(f)
```

### Using with SAP² Model

For detailed usage instructions, training and inference code, please refer to:

**🔗 [SAP²-ASR GitHub Repository](https://github.com/jymh/SAP2-ASR.git)**

The repository contains:
- Complete model implementation code
- Training and inference scripts
- Data preprocessing tools
- Evaluation scripts
- Detailed documentation

## 📎 Citation

If you use this dataset in your research, please cite the following paper:

```bibtex
@article{rong2025speechaware,
  title={Speech-Aware Long Context Pruning and Integration for Contextualized Automatic Speech Recognition},
  author={Rong, Yiming and Zhang, Yixin and Wang, Ziyi and Jiang, Deyang and Zhao, Yunlong and Wu, Haoran and Zhou, Shiyu and Xu, Bo},
  journal={arXiv preprint arXiv:2511.11139},
  year={2025}
}
```

**Paper Link**: [https://www.arxiv.org/abs/2511.11139](https://www.arxiv.org/abs/2511.11139)

## 📚 Related Resources

- **Code Repository**: [https://github.com/jymh/SAP2-ASR.git](https://github.com/jymh/SAP2-ASR.git)
- **Paper**: [arXiv:2511.11139](https://www.arxiv.org/abs/2511.11139)
- **SlideSpeech Original Dataset**: [https://slidespeech.github.io/](https://slidespeech.github.io/)
- **LibriSpeech Original Dataset**: [OpenSLR](https://www.openslr.org/12/)

## 🏛 License

The use of this dataset should follow the license requirements of the original datasets. For SlideSpeech and LibriSpeech, please refer to the license information on their original resource pages.

## ⚠️ Notes

1. Audio file paths may need to be adjusted according to your actual environment
2. The dataset files are large, please ensure you have sufficient storage space
3. Please carefully read the detailed documentation in the [GitHub repository](https://github.com/jymh/SAP2-ASR.git) before use

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**For more information and usage examples, please visit [SAP²-ASR GitHub Repository](https://github.com/jymh/SAP2-ASR.git)**