---
license: odc-by
language:
- ja
size_categories:
- 10M<n<100M
task_categories:
- text-generation
pretty_name: CleanedFineWeb2Edu-jp
---

# CleanedFineWeb2Edu-jp

CleanedFineWeb2Edu-jp is a cleaned Japanese web text dataset.

This dataset was created from the `sample_10BT` subset of
[`hotchpotch/fineweb-2-edu-japanese`](https://huggingface.co/datasets/hotchpotch/fineweb-2-edu-japanese).
The source text was refined with
[`MK0727/corpus-refiner-jp`](https://huggingface.co/MK0727/corpus-refiner-jp).

## Purpose

The main purpose of this dataset is to provide cleaner Japanese web text for
language model pretraining and continued pretraining.

This dataset keeps Japanese web documents from FineWeb2-Edu while reducing
boilerplate, navigation fragments, repeated links, metadata-like text, and other
low-value lines. It is intended for use cases that need broad Japanese web text
with less page-structure noise than the original subset.

## Dataset Creation

After applying `MK0727/corpus-refiner-jp`, documents were filtered out when the
refined text was 200 characters or shorter, or when it was 4096 tokens or longer
with `sbintuitions/modernbert-ja-130m`.

## Dataset Statistics

| Item | Value |
|---|---:|
| Source size | about 12.8B Gemma 4 tokens |
| Final size | about 9.95B Gemma 4 tokens |
| Retention rate | about 78% |

## Data Fields

| Field | Description |
|---|---|
| `text` | Cleaned Japanese text |
| `id` | Original document ID |
| `dump` | Common Crawl dump name |
| `url` | Source URL |
| `date` | Crawl date |
| `file_path` | Original Common Crawl file path |
| `output_char` | Character count of `text` |
| `output_token` | Token count of `text` using `google/gemma-4-26B-A4B-it` |

## License

This dataset is released under the ODC Attribution License (`odc-by`).