---
license: cc-by-nc-4.0
task_categories:
  - object-detection
language:
  - km
tags:
  - document-layout
  - khmer
  - coco
  - object-detection
pretty_name: ARDB Daily Bulletin Layout (COCO, folder format)
size_categories:
  - n<1K
---

# ARDB Daily Bulletin Layout Detection (COCO, folder format)

> ## ⚠️ Please use [**Soxavin/ardb-layout-coco-v2**](https://huggingface.co/datasets/Soxavin/ardb-layout-coco-v2) instead
>
> This v1 repository is the **original folder / COCO** export and is **no longer maintained**.
> The identical data is published in Parquet format — with a working Dataset Viewer and the
> standard 🤗 `datasets` loader — at
> [**Soxavin/ardb-layout-coco-v2**](https://huggingface.co/datasets/Soxavin/ardb-layout-coco-v2).
> New users should load v2:
> ```python
> from datasets import load_dataset
> ds = load_dataset("Soxavin/ardb-layout-coco-v2")
> ```

A document-layout **object-detection** dataset built from **ARDB (Agricultural and Rural
Development Bank of Cambodia) daily market-price bulletins** — born-digital Khmer-language PDFs,
one price table per page. Every page is annotated with bounding boxes for five layout regions
(table, text, section header, page furniture, picture).

## Layout on disk

```
train/  valid/  test/
  ├── <page>.jpg                 # page images, 200 DPI (2000 × 2000 px)
  └── _annotations.coco.json     # COCO annotations for that split
```

## Dataset structure

| Split | Pages | Boxes | Source documents |
|-------|------:|------:|-----------------:|
| train |    73 |   341 | 24 bulletins     |
| valid |     9 |    42 |  3 bulletins     |
| test  |     9 |    42 |  3 bulletins     |
| **total** | **91** | **425** | **30 bulletins** |

## Classes

| id | name             | Boxes | Notes |
|----|------------------|------:|-------|
| 0  | `Table`          |    91 | The price table — exactly one per page, covering the full table including header row and label columns. |
| 1  | `Text`           |    30 | Body / paragraph text. |
| 2  | `Section-Header` |    31 | Headings and titles. |
| 3  | `Page-Furniture` |   182 | Page headers and footers. |
| 4  | `Picture`        |    91 | Logos and stamps. |

Boxes use the COCO convention: `bbox = [x, y, width, height]` in pixels.

## Data collection & annotation

1. **Source.** Publicly published ARDB daily market-price bulletins, rendered page-by-page at
   200 DPI.
2. **Pre-annotation.** Candidate boxes were generated automatically with a document-layout
   detector, confidence-filtered, and mapped to the five-class set above.
3. **Human correction.** Every page was reviewed and corrected in Roboflow: fragmented table
   regions merged to one box per page, edges tightened, mislabels fixed, spurious boxes removed.
4. **Splitting.** Splits are assigned **by document** (no bulletin's pages span splits) to
   prevent near-duplicate-page leakage.

## Limitations

- **Single template.** All bulletins share one recurring page layout, so validation/test
  measure annotation quality rather than cross-design generalization.
- **Small scale.** 91 pages / 30 documents.

## License

The **annotations** (bounding boxes, class labels, metadata) are released under **CC BY-NC 4.0** —
free for non-commercial research with attribution. The **page images** are reproductions of
bulletins published by ARDB, included for research use only; users are responsible for complying
with the source documents' terms. This dataset is not affiliated with or endorsed by ARDB.