Datasets:

bowang0911
/

fineweb-2-autocurate

dataset_info:
  - config_name: ces_Latn
    features:
      - name: text
        dtype: string
      - name: id
        dtype: string
      - name: url
        dtype: string
      - name: dump
        dtype: string
      - name: date
        dtype: string
      - name: language
        dtype: string
      - name: language_score
        dtype: float64
license: odc-by
task_categories:
  - text-generation
language:
  - ces
tags:
  - fineweb
  - autocurate
  - autoresearch

fineweb-2-autocurate

Autonomously curated subsets of HuggingFaceFW/fineweb-2.

An AI agent (Qwen3.5-35B-A3B) iteratively analyzed random samples of web documents, identified quality problems, and proposed heuristic fixes (regex, string operations). Each fix was validated by training a small language model and measuring BPB improvement on a Wikipedia eval set. Only fixes that improved BPB were kept.

Subsets

Language	Original docs	Kept docs	Kept %
ces_Latn	66,067,904	32,493,428	49.2%
nob_Latn	38,144,343	30,561,546	80.1%
nld_Latn	147,301,270	126,021,987	85.6%
swe_Latn	59,485,306	53,887,025	90.6%
fin_Latn	36,710,816	33,010,774	89.9%
pol_Latn	151,966,724	100,254,080	66.0%
tur_Latn	95,129,129	83,878,413	88.2%