
Docs2KG
Docs2KG: A Human-LLM Collaborative Approach to Unified Knowledge Graph Construction from Heterogeneous Documents
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Docs2KG is a tool designed for constructing a unified knowledge graph from heterogeneous documents. It addresses the challenges of digitizing diverse unstructured documents and constructing a high-quality knowledge graph with less effort. The tool combines bottom-up and top-down approaches, utilizing a human-LLM collaborative interface to enhance the generated knowledge graph. It organizes the knowledge graph into MetaKG, LayoutKG, and SemanticKG, providing a comprehensive view of document content. Docs2KG aims to streamline the process of knowledge graph construction and offers metrics for evaluating the quality of automatic construction.
README:
A Human-LLM Collaborative Approach to Unified Knowledge Graph Construction from Heterogeneous Documents
We have published the package to PyPi: Docs2KG,
You can install it via:
pip install Docs2KG
python -m spacy download en_core_web_sm
Detailed setup and tutorial can be found in the documentation.
To digest diverse unstructured documents into a unified knowledge graph, there are two main challenges:
-
How to get the documents to be digitized?
- With the dual-path data processing
- For image based documents, like scanned PDF, images, etc., we can process them through the layout analysis and OCR, etc. Docling and MinerU are focusing on this part.
- For native digital documents, like ebook, docx, html, etc., we can process them through the programming parser
- It is promising that we will have a robust solution soon.
- With the dual-path data processing
- How to construct a high-quality unified knowledge graph with less effort?
For now, a lot of tools are focusing on the first challenge, however, overlook the second challenge.
To construct a high-quality unified knowledge graph with less effort, we propose the Docs2KG.
- We adapt both bottom-up and top-down approaches to construct the unified knowledge graph and its ontology with the help of LLM.
- We organise the knowledge graph from three aspects:
- MetaKG: the knowledge about all documents, like the author, the publication date, etc.
- LayoutKG: the knowledge about the layout of the documents, like title, subtitle, section, etc.
- SemanticKG: the knowledge about the content of the documents, like entities, relations, etc.
- We provide a human-LLM collaborative interface which allows human to review and enhance the generated knowledge graph.
- An updated version of ontology, entity list, relation list will in return help the KG Construction LLM agent to generate better results in the next iteration.
- The output of the knowledge graph can be used in downstream applications, like RAG, etc.
- Link for the human-LLM collaborative interface: Docs2KG
- After the annotation, metrics to evaluate the quality of automatic construction will be provided.
- How many entities are correctly extracted by each method?
- How many relations are correctly extracted by each method?
- Contribution and retention of each method in the final knowledge graph, including human annotation.
Example of the interface, you only need to register, and you can access it freely.
python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt
pip install -r requirements.dev.txt
pip install -e .
If you find this package useful, please consider citing our work:
@misc{sun2024docs2kg,
title = {Docs2KG: Unified Knowledge Graph Construction from Heterogeneous Documents Assisted by Large Language Models},
author = {Qiang Sun and Yuanyi Luo and Wenxiao Zhang and Sirui Li and Jichunyang Li and Kai Niu and Xiangrui Kong and Wei Liu},
year = {2024},
eprint = {2406.02962},
archivePrefix = {arXiv},
primaryClass = {cs.CL}
}
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