README.md

## Dataset Summary
This dataset is a **2 Billion token subset** of the [RedPajama-Data-1T](https://huggingface.co/datasets/togethercomputer/RedPajama-Data-1T) dataset created by Together Computer.

It was created to provide a smaller, lightweight version of the massive 1.2 Trillion token dataset for testing, debugging, and small-scale pre-training experiments. This specific subset was streamed primarily from the **C4 (Colossal Clean Crawled Corpus)** partition of the original RedPajama dataset.

## Dataset Structure
The dataset retains the original structure of RedPajama. Each row contains:
- **text**: The actual content (string).
- **meta**: Metadata dict containing `url`, `timestamp`, `source`, etc.
- **subset**: The name of the RedPajama subset this sample came from (e.g., `c4`).

## Source Data
This dataset is a direct downstream derivative of **RedPajama-Data-1T**.

- **Original Repository:** [togethercomputer/RedPajama-Data-1T](https://huggingface.co/datasets/togethercomputer/RedPajama-Data-1T)
- **Original Author:** Together Computer
- **Subset Used:** `c4` (Colossal Clean Crawled Corpus)

## Creation Process
This dataset was generated using the Hugging Face `datasets` library with the following methodology:

1. **Direct Streaming:** Data was streamed directly from the original source files to avoid downloading the full 5TB dataset.
2. **Selection:** The first ~2 Billion tokens were selected from the `c4` split.
3. **Token Counting:** Token counts were estimated using the `EleutherAI/gpt-neox-20b` tokenizer (or a 1 token ≈ 4 characters approximation).

## Licensing Information
Since this is a subset of RedPajama, it inherits the licensing terms of the original data.

- **RedPajama-Data-1T** is distributed under the licenses of its underlying data sources.
- **C4 (Common Crawl)**: Terms of Use are available [here](https://commoncrawl.org/terms-of-use/).
- **Code/Scripts**: The code used to generate this subset is Open Source.

## Citation
If you use this dataset, please cite the original RedPajama paper:

```bibtex
@software{together2023redpajama,
  author = {Together Computer},
  title = {RedPajama: An Open Source Recipe to Reproduce LLaMA training dataset},
  month = April,
  year = 2023,
  url = {[https://github.com/togethercomputer/RedPajama-Data](https://github.com/togethercomputer/RedPajama-Data)}
}