| --- |
| language: |
| - en |
| license: apache-2.0 |
| task_categories: |
| - text-classification |
| tags: |
| - data-cleaning |
| - corpus-filtering |
| - text-quality |
| - ultrax |
| size_categories: |
| - 1M<n<10M |
| --- |
| |
| # UltraX Line Classification Dataset |
|
|
| This dataset provides line-level annotations extracted from large English corpora to determine whether individual lines should be **kept**, **deleted**, or **revised** for data cleaning and curation. |
|
|
| > [!NOTE] |
| > This dataset is inspired by the UltraX project but is not officially affiliated with it. No proprietary artifacts from the original project are republished here. |
|
|
| ## Methodology |
|
|
| 1. **Data Collection:** 50,000 rows were sampled from each configuration of [openbmb/UltraX-Preview](https://huggingface.co/datasets/openbmb/UltraX-Preview). |
| 2. **Line Comparison:** Raw and cleaned text versions from each row were compared to classify individual lines into mutually exclusive categories: |
| - **Keep:** Lines retained in the final clean text. |
| - **Delete:** Lines removed during the cleaning process. |
| - **Edit:** Lines that underwent revision between the raw and clean versions. |
| 3. **Splitting:** The dataset uses a stratified split into **train (80%)**, **validation (10%)**, and **test (10%)**. |
|
|
| ### Class Distribution |
|
|
| | Label | Train | Validation | Test | Total | |
| | :--- | ---: | ---: | ---: | ---: | |
| | **Delete** | 644,545 | 80,568 | 80,568 | 805,681 | |
| | **Edit** | 46,964 | 5,871 | 5,871 | 58,706 | |
| | **Keep** | 3,518,387 | 439,798 | 439,799 | 4,397,984 | |
| | **Total** | **4,209,896** | **526,237** | **526,238** | **5,262,371** | |
|
|
| ## Limitations |
|
|
| - **Class Imbalance:** The dataset is heavily imbalanced, reflecting real-world data cleaning distributions (the vast majority of lines are kept, fewer are deleted, and only a small fraction are edited). |
| - **Context Dependency:** Annotations are performed at the line level, which may occasionally lack broader document context (e.g., a specific line might serve as a valid title in one document but an irrelevant footnote in another). |
| - **Formatting Artifacts:** Potential structural quirks or formatting artifacts may persist from the raw text inputs. |
|
|
| ## License |
|
|
| Distributed under the [Apache 2.0 License](https://www.apache.org/licenses/LICENSE-2.0). |
