kglab 0.7.0

a simple abstraction layer in Python for building knowledge graphs

kglab

Welcome to Graph Data Science: https://derwen.ai/docs/kgl/

The kglab library provides a simple abstraction layer in Python 3.11-3.12 for building knowledge graphs, leveraging Pandas, NetworkX, RAPIDS, RDFLib, Morph-KGC, and many more.

Getting Started

See the "Getting Started" section of the online documentation.

pip

python3 -m pip install kglab

poetry

poetry add kglab

conda

conda env create -n kglab
conda activate kglab
pip install kglab

Then to run some simple uses of this library:

import kglab

# create a KnowledgeGraph object
kg = kglab.KnowledgeGraph()

# load RDF from a URL
kg.load_rdf("http://bigasterisk.com/foaf.rdf", format="xml")

# measure the graph
measure = kglab.Measure()
measure.measure_graph(kg)

print("edges: {}\n".format(measure.get_edge_count()))
print("nodes: {}\n".format(measure.get_node_count()))

# serialize as a string in "Turtle" TTL format
ttl = kg.save_rdf_text()
print(ttl)

See the tutorial notebooks in the examples subdirectory for sample code and patterns to use in integrating kglab with other graph libraries in Python: https://derwen.ai/docs/kgl/tutorial/

Using Docker

For a simple approach to running the tutorials, see use of docker compose: https://derwen.ai/docs/kgl/tutorial/#use-docker-compose

Also, container images for each release are available on DockerHub: https://hub.docker.com/repository/docker/derwenai/kglab

To build a container image and run it for the tutorials:

docker build --pull --rm -f "docker/Dockerfile" -t kglab:latest .
docker run -p 8888:8888 -it kglab

To build and run a container image for testing:

docker build --pull --rm -f "docker/testsuite.Dockerfile" -t kglabtest:latest .
docker run --rm -it kglabtest

Build Instructions

Note: unless you are contributing code and updates, in most use cases won't need to build this package locally.

Instead, simply install from PyPi or use Conda.

To set up the build environment locally, see the "Build Instructions" section of the online documentation.

Semantic Versioning

Before kglab reaches release v1.0.0 the types and classes may undergo substantial changes and the project is not guaranteed to have a consistent API.

Even so, we'll try to minimize breaking changes. We'll also be sure to provide careful notes.

See: changelog.txt

Contributing Code

We welcome people getting involved as contributors to this open source project!

For detailed instructions please see: CONTRIBUTING.md

License and Copyright

Source code for kglab plus its logo, documentation, and examples have an MIT license which is succinct and simplifies use in commercial applications.

All materials herein are Copyright © 2020-2025 Derwen, Inc.

Attribution

Please use the following BibTeX entry for citing **kglab** if you use it in your research or software. Citations are helpful for the continued development and maintenance of this library.

@software{kglab,
  author = {Paco Nathan},
  title = {{kglab: a simple abstraction layer in Python for building knowledge graphs}},
  year = 2020,
  publisher = {Derwen},
  doi = {10.5281/zenodo.6360664},
  url = {https://github.com/DerwenAI/kglab}
}

Kudos

Many thanks to our open source sponsors; and to our contributors: @ceteri, @dvsrepo, @Ankush-Chander, @louisguitton, @tomaarsen, @Mec-iS, @jake-aft, @cutterkom, @RishiKumarRay, @Tpt, @ArenasGuerreroJulian, @fils, @akuckartz, @gauravjaglan, @pebbie, @CatChenal, @dmoore247, plus general support from Derwen, Inc.; the Knowledge Graph Conference and Connected Data World; plus an even larger scope of use cases represented by their communities; and support from Kubuntu Focus, and the RAPIDS team @ NVIDIA.

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