dicee 0.0.4

Dice embedding is an hardware-agnostic framework for large-scale knowledge graph embedding applications

DICE Embeddings: Hardware-agnostic Framework for Large-scale Knowledge Graph Embeddings

Knowledge graph embedding research has mainly focused on learning continuous representations of knowledge graphs towards the link prediction problem. Recently developed frameworks can be effectively applied in a wide range of research-related applications. Yet, using these frameworks in real-world applications becomes more challenging as the size of the knowledge graph grows.

We developed the DICE Embeddings framework (dicee) to compute embeddings for large-scale knowledge graphs in a hardware-agnostic manner. To achieve this goal, we rely on

1. Pandas & Co. to use parallelism at preprocessing a large knowledge graph,
2. PyTorch & Co. to learn knowledge graph embeddings via multi-CPUs, GPUs, TPUs or computing cluster, and
3. Huggingface to ease the deployment of pre-trained models.

Why Pandas & Co. ? A large knowledge graph can be read and preprocessed (e.g. removing literals) by pandas, modin, or polars in parallel. Through polars, a knowledge graph having more than 1 billion triples can be read in parallel fashion. Importantly, using these frameworks allow us to perform all necessary computations on a single CPU as well as a cluster of computers.

Why PyTorch & Co. ? PyTorch is one of the most popular machine learning frameworks available at the time of writing. PytorchLightning facilitates scaling the training procedure of PyTorch without boilerplate. In our framework, we combine PyTorch & PytorchLightning. Users can choose the trainer class (e.g., DDP by Pytorch) to train large knowledge graph embedding models with billions of parameters. PytorchLightning allows us to use state-of-the-art model parallelism techniques (e.g. Fully Sharded Training, FairScale, or DeepSpeed) without extra effort. With our framework, practitioners can directly use PytorchLightning for model parallelism to train gigantic embedding models.

Why Hugging-face Gradio? Deploy a pre-trained embedding model without writing a single line of code.

Installation

Details

pip install dicee

or

git clone https://github.com/dice-group/dice-embeddings.git
conda create -n dice python=3.10 --no-default-packages && conda activate dice
pip3 install "pandas>=1.5.1"
pip3 install "torch>=2.0.0"
pip3 install "polars>=0.16.14"
pip3 install "scikit-learn>=1.2.2"
pip3 install "pyarrow>=11.0.0"
pip3 install "pytest>=7.2.2"
pip3 install "gradio>=3.23.0"
pip3 install "psutil>=5.9.4"
pip3 install "pytorch-lightning==1.6.4"
pip3 install "pykeen==1.10.1"
pip3 install "zstandard>=0.21.0"

To test the Installation

wget https://hobbitdata.informatik.uni-leipzig.de/KG/KGs.zip
unzip KGs.zip
pytest -p no:warnings -x # it takes circa 15 minutes
pytest -p no:warnings --lf # run only the last failed test
pytest -p no:warnings --ff # to run the failures first and then the rest of the tests.

To see the software architecture, execute the following command

pyreverse dicee/ && dot -Tpng -x classes.dot -o dice_software.png && eog dice_software.png
# or
pyreverse dicee/trainer && dot -Tpng -x classes.dot -o trainer.png && eog trainer.png

Knowledge Graph Embedding Models

Details

1. TransE, DistMult, ComplEx, ConEx, QMult, OMult, ConvO, ConvQ, Keci
2. All 44 models available in https://github.com/pykeen/pykeen#models

For more, please refer to examples.

How to Train

Details

Please refer to examples.

How to Deploy

from dicee import KGE
KGE(path='...').deploy(share=True,top_k=10)

To see the interface of the webservice

Downstream Applications

Triple Classification

Using pre-trained ConEx on DBpedia 03-2022

# To download a pretrained ConEx
mkdir ConEx && cd ConEx && wget -r -nd -np https://hobbitdata.informatik.uni-leipzig.de/KGE/DBpedia/ConEx/ && cd ..

from dicee import KGE
# (1) Load a pretrained ConEx on DBpedia 
pre_trained_kge = KGE(path='ConEx')

pre_trained_kge.triple_score(head_entity=["http://dbpedia.org/resource/Albert_Einstein"],relation=["http://dbpedia.org/ontology/birthPlace"],tail_entity=["http://dbpedia.org/resource/Ulm"]) # tensor([0.9309])
pre_trained_kge.triple_score(head_entity=["http://dbpedia.org/resource/Albert_Einstein"],relation=["http://dbpedia.org/ontology/birthPlace"],tail_entity=["http://dbpedia.org/resource/German_Empire"]) # tensor([0.9981])
pre_trained_kge.triple_score(head_entity=["http://dbpedia.org/resource/Albert_Einstein"],relation=["http://dbpedia.org/ontology/birthPlace"],tail_entity=["http://dbpedia.org/resource/Kingdom_of_Württemberg"]) # tensor([0.9994])
pre_trained_kge.triple_score(head_entity=["http://dbpedia.org/resource/Albert_Einstein"],relation=["http://dbpedia.org/ontology/birthPlace"],tail_entity=["http://dbpedia.org/resource/Germany"]) # tensor([0.9498])
pre_trained_kge.triple_score(head_entity=["http://dbpedia.org/resource/Albert_Einstein"],relation=["http://dbpedia.org/ontology/birthPlace"],tail_entity=["http://dbpedia.org/resource/France"]) # very low
pre_trained_kge.triple_score(head_entity=["http://dbpedia.org/resource/Albert_Einstein"],relation=["http://dbpedia.org/ontology/birthPlace"],tail_entity=["http://dbpedia.org/resource/Italy"]) # very low

Relation Prediction

from dicee import KGE
pre_trained_kge = KGE(path='ConEx')
pre_trained_kge.predict_topk(head_entity=["http://dbpedia.org/resource/Albert_Einstein"],tail_entity=["http://dbpedia.org/resource/Ulm"])

Entity Prediction

from dicee import KGE
pre_trained_kge = KGE(path='ConEx')
pre_trained_kge.predict_topk(head_entity=["http://dbpedia.org/resource/Albert_Einstein"],relation=["http://dbpedia.org/ontology/birthPlace"]) 
pre_trained_kge.predict_topk(relation=["http://dbpedia.org/ontology/birthPlace"],tail_entity=["http://dbpedia.org/resource/Albert_Einstein"]) 

Finding Missing Triples

from dicee import KGE
pre_trained_kge = KGE(path='ConEx')
missing_triples = pre_trained_kge.find_missing_triples(confidence=0.95, entities=[''], relations=[''])

Complex Query Answering

The beam search technique proposed in Complex Query Answering with Neural Link Predictors

from dicee import KGE
# (1) Load a pretrained KGE model on KGs/Family
pretrained_model = KGE(path='Experiments/2022-12-08 11:46:33.654677')
# (2) Query: ?P : \exist Married(P,E) \land hasSibling(E, F9M167) (To whom a sibling of F9M167 is married to?   
# (3) Decompose (2) into two query
# (3.1) Who is a sibling of F9M167? => hasSibling(E, F9M167) => {F9F141,F9M157}
# (3.2) To whom a results of (3.1) is married to ? {F9M142, F9F158}
pretrained_model.predict_conjunctive_query(entity='<http://www.benchmark.org/family#F9M167>',
                                          relations=['<http://www.benchmark.org/family#hasSibling>',
                                                     '<http://www.benchmark.org/family#married>'], topk=1)

Description Logic Concept Learning (soon)

from dicee import KGE
# (1) Load a pretrained KGE model on KGs/Family
pretrained_model = KGE(path='Experiments/2022-12-08 11:46:33.654677')
pretrained_model.learn_concepts(pos={''},neg={''},topk=1)

Pre-trained Models

Please contact: [e-mail] or [e-mail] , if you lack hardware resources to obtain embeddings of a specific knowledge Graph.

• DBpedia version: 06-2022 Embeddings:
  • Models: ConEx, QMult
• YAGO3-10 ConEx embeddings
• FB15K-237 ConEx embeddings
• WN18RR ConEx embeddings
• For more please look at Hobbit Data

Documentation

In documents folder, we explained many details about knowledge graphs, knowledge graph embeddings, training strategies and many more background knowledge. We continuously work on documenting each and every step to increase the readability of our code.

How to cite

Currently, we are working on our manuscript describing our framework. If you really like our work and want to cite it now, feel free to chose one :)

# DICE Embedding Framework
@article{demir2022hardware,
  title={Hardware-agnostic computation for large-scale knowledge graph embeddings},
  author={Demir, Caglar and Ngomo, Axel-Cyrille Ngonga},
  journal={Software Impacts},
  year={2022},
  publisher={Elsevier}
}
# Keci
Accepted at ECML. Stay tuned for the manuscript!
# KronE
@inproceedings{demir2022kronecker,
  title={Kronecker decomposition for knowledge graph embeddings},
  author={Demir, Caglar and Lienen, Julian and Ngonga Ngomo, Axel-Cyrille},
  booktitle={Proceedings of the 33rd ACM Conference on Hypertext and Social Media},
  pages={1--10},
  year={2022}
}
# QMult, OMult, ConvQ, ConvO
@InProceedings{pmlr-v157-demir21a,
  title = 	 {Convolutional Hypercomplex Embeddings for Link Prediction},
  author =       {Demir, Caglar and Moussallem, Diego and Heindorf, Stefan and Ngonga Ngomo, Axel-Cyrille},
  booktitle = 	 {Proceedings of The 13th Asian Conference on Machine Learning},
  pages = 	 {656--671},
  year = 	 {2021},
  editor = 	 {Balasubramanian, Vineeth N. and Tsang, Ivor},
  volume = 	 {157},
  series = 	 {Proceedings of Machine Learning Research},
  month = 	 {17--19 Nov},
  publisher =    {PMLR},
  pdf = 	 {https://proceedings.mlr.press/v157/demir21a/demir21a.pdf},
  url = 	 {https://proceedings.mlr.press/v157/demir21a.html},
}
# ConEx
@inproceedings{demir2021convolutional,
title={Convolutional Complex Knowledge Graph Embeddings},
author={Caglar Demir and Axel-Cyrille Ngonga Ngomo},
booktitle={Eighteenth Extended Semantic Web Conference - Research Track},
year={2021},
url={https://openreview.net/forum?id=6T45-4TFqaX}}
# Shallom
@inproceedings{demir2021shallow,
  title={A shallow neural model for relation prediction},
  author={Demir, Caglar and Moussallem, Diego and Ngomo, Axel-Cyrille Ngonga},
  booktitle={2021 IEEE 15th International Conference on Semantic Computing (ICSC)},
  pages={179--182},
  year={2021},
  organization={IEEE}

For any questions or wishes, please contact: [e-mail] or [e-mail]