| --- |
| license: cc-by-4.0 |
| language: |
| - en |
| tags: |
| - hallucinations |
| - synthetic-data |
| - wikipedia |
| - safety |
| - nlp |
| --- |
| |
| # Fake Wikipedia |
|
|
| A synthetic and semi-synthetic dataset designed for studying **hallucinations, omissions, and factual inconsistencies** in language models. |
|
|
| This dataset contains **10000 paragraphs** derived from the [agentlans/wikipedia-first-paragraph](https://huggingface.co/datasets/agentlans/wikipedia-first-paragraph) dataset, filtered for lengths between **1000 and 8000 characters**. |
|
|
| Using [**Qwen/Qwen3.5-4B**](https://huggingface.co/Qwen/Qwen3.5-4B), two distinct text variants were generated for each entry based solely on the article title: |
| 1. **Fully Synthetic (`fake`):** A completely hallucinated/made-up Wikipedia introduction generated entirely by the model. |
| 2. **Semi-Synthetic (`edited`):** A stylistic rewrite of the original Wikipedia paragraph adapted to match the model's synthetic writing style. |
|
|
| ## 📂 Data Fields |
|
|
| | Column | Type | Description | |
| | :--- | :--- | :--- | |
| | `id` | `string` | Unique Wikipedia page identifier. | |
| | `url` | `string` | Direct link to the source Wikipedia article. | |
| | `title` | `string` | Title of the Wikipedia article. | |
| | `text` | `string` | The original, unaltered first paragraph from Wikipedia. | |
| | `edited` | `string` | The rewritten version of the original text matching the synthetic style. | |
| | `fake` | `string` | A completely fabricated Wikipedia-style paragraph generated by the model. | |
|
|
|
|
| ## 💡 Example Row |
|
|
| ```json |
| { |
| "id": "12519725", |
| "url": "https://en.wikipedia.org/wiki/Esp%C3%ADritu%20Santo%20antelope%20squirrel", |
| "title": "Espíritu Santo antelope squirrel", |
| "text": "The Espíritu Santo antelope squirrel (Ammospermophilus insularis) is a species of antelope squirrel in the family Sciuridae...", |
| "edited": "The Espíritu Santo antelope squirrel (*Ammospermophilus insularis*) is a species of squirrel in the family Sciuridae...", |
| "fake": "The Espíritu Santo antelope squirrel (*Sciurus granatensis*) is a species of rodent belonging to the genus *Sciurus*..." |
| } |
| ``` |
|
|
| ## ⚠️ Limitations & Biases |
|
|
| * **Content Divergence:** The original (`text`) and fully synthetic (`fake`) paragraphs are not directly parallel in content or level of detail. |
| * **Source Quality:** Wikipedia lead paragraphs vary significantly in writing style, formatting, and structural quality. |
| * **Topic Bias:** The underlying source data inherits natural Wikipedia biases regarding which subjects have extensive, detailed lead paragraphs. |
| * **Realistic Fakes:** This dataset is for studying misinformation and hallucinations, not propagating them. |
|
|
| ## Licence |
|
|
| Creative Commons Attribution 4.0 |
