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AI-KG: An Automatically Generated Knowledge Graph of Artificial Intelligence

Part of the Lecture Notes in Computer Science book series (LNISA,volume 12507)


Scientific knowledge has been traditionally disseminated and preserved through research articles published in journals, conference proceedings, and online archives. However, this article-centric paradigm has been often criticized for not allowing to automatically process, categorize, and reason on this knowledge. An alternative vision is to generate a semantically rich and interlinked description of the content of research publications. In this paper, we present the Artificial Intelligence Knowledge Graph (AI-KG), a large-scale automatically generated knowledge graph that describes 820K research entities. AI-KG includes about 14M RDF triples and 1.2M reified statements extracted from 333K research publications in the field of AI, and describes 5 types of entities (tasks, methods, metrics, materials, others) linked by 27 relations. AI-KG has been designed to support a variety of intelligent services for analyzing and making sense of research dynamics, supporting researchers in their daily job, and helping to inform decision-making in funding bodies and research policymakers. AI-KG has been generated by applying an automatic pipeline that extracts entities and relationships using three tools: DyGIE++, Stanford CoreNLP, and the CSO Classifier. It then integrates and filters the resulting triples using a combination of deep learning and semantic technologies in order to produce a high-quality knowledge graph. This pipeline was evaluated on a manually crafted gold standard, yielding competitive results. AI-KG is available under CC BY 4.0 and can be downloaded as a dump or queried via a SPARQL endpoint.


  • Artificial Intelligence
  • Scholarly data
  • Knowledge graph
  • Information Extraction
  • Natural Language Processing

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  • DOI: 10.1007/978-3-030-62466-8_9
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    We thank NVIDIA Corp. for the donation of 1 Titan Xp GPU used in this research.

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Correspondence to Danilo Dessì .

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Dessì, D., Osborne, F., Reforgiato Recupero, D., Buscaldi, D., Motta, E., Sack, H. (2020). AI-KG: An Automatically Generated Knowledge Graph of Artificial Intelligence. In: , et al. The Semantic Web – ISWC 2020. ISWC 2020. Lecture Notes in Computer Science(), vol 12507. Springer, Cham.

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