Knowledge Graph Infrastructure for the German National Research Data Infrastructure (KGI4NFDI)

Knowledge graphs (KG) are an important and powerful tool for interoperability in research and for fulfilling the mission of the NFDI. While several consortia are already developing their own KG solutions, a centralized and reusable KG infrastructure (KGI) is missing. This basic service will provide key components of such a KGI. These include a KG registry that aggregates information on all KGs contributed by NFDI consortia and their research communities, as well as a service to facilitate access to these KGs across NFDI projects. In addition, the base service aims to empower research communities to create KGs by providing the necessary technologies and expertise for decentralized KG instances based on standards and proven approaches. A comprehensive survey will be conducted to refine and optimize these services. Documentation on the creation of KGs will be compiled and the base service will provide dedicated consulting services for consortia and facilitate the harmonization of ontologies from different consortia.

Overall, this integrated approach will seek to enhance data integration and foster standardized ontological practices. It will make a significant contribution to advancing the “One NFDI” vision and will support the FAIRification of data across disciplines. The base service will complement international KG initiatives, such as those promoted by the European Open Science Cloud (EOSC).