metadata

annotations_creators:
  - crowdsourced
license: other
pretty_name: DocLayNet
size_categories:
  - 10K<n<100K
tags:
  - layout-segmentation
  - COCO
  - document-understanding
  - PDF
task_categories:
  - object-detection
  - image-segmentation
task_ids:
  - instance-segmentation

Dataset Card for DocLayNet v1.1

Table of Contents
Dataset Description
- Dataset Summary
- Supported Tasks and Leaderboards
Dataset Structure
- Data Fields
- Data Splits
Dataset Creation
- Annotations
Additional Information

Dataset Description

Homepage: https://developer.ibm.com/exchanges/data/all/doclaynet/
Repository: https://github.com/DS4SD/DocLayNet
Paper: https://doi.org/10.1145/3534678.3539043

Dataset Summary

DocLayNet provides page-by-page layout segmentation ground-truth using bounding-boxes for 11 distinct class labels on 80863 unique pages from 6 document categories. It provides several unique features compared to related work such as PubLayNet or DocBank:

Human Annotation: DocLayNet is hand-annotated by well-trained experts, providing a gold-standard in layout segmentation through human recognition and interpretation of each page layout
Large layout variability: DocLayNet includes diverse and complex layouts from a large variety of public sources in Finance, Science, Patents, Tenders, Law texts and Manuals
Detailed label set: DocLayNet defines 11 class labels to distinguish layout features in high detail.
Redundant annotations: A fraction of the pages in DocLayNet are double- or triple-annotated, allowing to estimate annotation uncertainty and an upper-bound of achievable prediction accuracy with ML models
Pre-defined train- test- and validation-sets: DocLayNet provides fixed sets for each to ensure proportional representation of the class-labels and avoid leakage of unique layout styles across the sets.

Dataset Structure

This dataset is structured differently from the other repository ds4sd/DocLayNet, as this one includes the content (PDF cells) of the detections, and abandons the COCO format.

image: page PIL image.
bboxes: a list of layout bounding boxes.
category_id: a list of class ids corresponding to the bounding boxes.
segmentation: a list of layout segmentation polygons.
pdf_cells: a list of lists corresponding to bbox. Each list contains the PDF cells (content) inside the bbox.
metadata: page and document metadetails.

Bounding boxes classes / categories:

1: Caption
2: Footnote
3: Formula
4: List-item
5: Page-footer
6: Page-header
7: Picture
8: Section-header
9: Table
10: Text
11: Title

The ["metadata"]["doc_category"] field uses one of the following constants:

* financial_reports,
* scientific_articles,
* laws_and_regulations,
* government_tenders,
* manuals,
* patents

Data Splits

The dataset provides three splits

train
val
test

Dataset Creation

Annotations

Annotation process

The labeling guideline used for training of the annotation experts are available at DocLayNet_Labeling_Guide_Public.pdf.

Who are the annotators?

Annotations are crowdsourced.

Additional Information

Dataset Curators

The dataset is curated by the Deep Search team at IBM Research. You can contact us at [email protected].

Curators:

Christoph Auer, @cau-git
Michele Dolfi, @dolfim-ibm
Ahmed Nassar, @nassarofficial
Peter Staar, @PeterStaar-IBM

Licensing Information

License: CDLA-Permissive-1.0

Citation Information

@article{doclaynet2022,
  title = {DocLayNet: A Large Human-Annotated Dataset for Document-Layout Segmentation},
  doi = {10.1145/3534678.353904},
  url = {https://doi.org/10.1145/3534678.3539043},
  author = {Pfitzmann, Birgit and Auer, Christoph and Dolfi, Michele and Nassar, Ahmed S and Staar, Peter W J},
  year = {2022},
  isbn = {9781450393850},
  publisher = {Association for Computing Machinery},
  address = {New York, NY, USA},
  booktitle = {Proceedings of the 28th ACM SIGKDD Conference on Knowledge Discovery and Data Mining},
  pages = {3743–3751},
  numpages = {9},
  location = {Washington DC, USA},
  series = {KDD '22}
}