# Attribution and Licensing Record

This file tracks asset-level licensing. It is not legal advice.

## Release decision

The project metadata uses `license: other` with a pending-clarification label. The dataset is MIT-licensed, but the intermediate checkpoint has no declared license. Public release of derivative weights remains blocked.

| Asset | Role | Recorded status | Required action |
|---|---|---|---|
| `microsoft/trocr-base-printed` | Ultimate base | MIT via Microsoft UniLM | Retain attribution and MIT notice |
| `Ransaka/TrOCR-Sinhala` | Intermediate checkpoint | No declared license | Obtain explicit clarification before publishing derivative weights |
| `Ransaka/sinhala_synthetic_ocr-large` | Training data | MIT `LICENSE`; DOI 10.57967/hf/1809 | Attribute Ransaka Ravihara and cite DOI |
| `avishadilhara/sinhala-ocr-lk-acts-1010` | Evaluation source | CC BY 4.0 | Attribute authors and cite source |
| Tesseract | Baseline | Apache 2.0 | Record version and cite |
| Surya OCR | Optional baseline | Version-dependent code and model terms | Re-check terms at execution time |

## Mandatory evidence to add

- Link to the checkpoint license-clarification discussion
- Author response or other permission record
- Immutable revisions for all Hub assets
- Copies or links to applicable notices at public release

## Citations

### TrOCR

```bibtex
@article{li2021trocr,
  title={TrOCR: Transformer-based Optical Character Recognition with Pre-trained Models},
  author={Li, Minghao and Lv, Tengchao and Cui, Lei and Lu, Yijuan and Florencio, Dinei and Zhang, Cha and Li, Zhoujun and Wei, Furu},
  journal={arXiv preprint arXiv:2109.10282},
  year={2021}
}
```

### Synthetic Sinhala OCR dataset

```bibtex
@misc{ravihara2024sinhala,
  author={Ransaka Ravihara},
  title={sinhala_synthetic_ocr-large},
  year={2024},
  publisher={Hugging Face},
  doi={10.57967/hf/1809},
  url={https://huggingface.co/datasets/Ransaka/sinhala_synthetic_ocr-large}
}
```

### Real Sinhala legislative-acts benchmark

Add the authors' preferred BibTeX from arXiv:2606.29378 before publication. Do not reconstruct bibliographic details from memory when the canonical citation is available.