---
license: odc-by
language:
- ar
- cy
- en
- es
- fr
- de
- id
- it
- ru
- sw
---

# TransWebEdu

**TransWebEdu** is a machine-translated, multi-way parallel, multilingual dataset at pretrain scale, supporting ten languages: Arabic, Welsh, German, English, Spanish, French, Indonesian, Italian, Russian, and Swahili.  
It is used to pretrain the [**TransWebLLM**](https://huggingface.co/britllm/TransWebLLM) model from scratch, with a focus on multilingual web-based education content.

For more information, see the paper:  
[Multilingual Language Model Pretraining using Machine-translated Data](https://arxiv.org/abs/2502.13252)

## Languages Supported

- Arabic (`ar`)
- Welsh (`cy`)
- English (`en`)
- Spanish (`es`)
- French (`fr`)
- German (`de`)
- Indonesian (`id`)
- Italian (`it`)
- Russian (`ru`)
- Swahili (`sw`)

## Dataset Notes

- The dataset files are chunked due to large file sizes.
- Each language's data files use a specific prefix to indicate language and script.

### Data File Prefix Mapping

| Language     | Identifier  |
|--------------|-------------|
| Arabic       | `arb_Arab`  |
| English      | `eng_Latn`  |
| French       | `fra_Latn`  |
| German       | `deu_Latn`  |
| Indonesian   | `ind_Latn`  |
| Italian      | `ita_Latn`  |
| Russian      | `rus_Cyrl`  |
| Spanish      | `spa_Latn`  |
| Swahili      | `swh_Latn`  |
| Welsh        | `cym_Latn`  |

## Contact

For questions or feedback, please contact:  
[jiaywang@cs.ucl.ac.uk](mailto:jiaywang@cs.ucl.ac.uk)