Datasets:
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.
The source text was refined with
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).