Metadata knowledge graph

With the output of our metadata harvester, we have built a knowledge graph containing the metadata records from major national research data repositories. The graph contains:

• Metadata schemas used in harvested RO-Crates,

• Metadata records enriched with Persistent Identifiers (PIDs) such as ORCID, DOI, ROR,

• Person and Organization entities playing various roles for research datasets,

• Subjects and keywords as controlled vocabularies.

The software running the knowledge graph is a customized instance of the VIVO Project software. It provides

• Entities rendered as web pages,

• Browsing and full-text search for entities

• Advanced, schema-aware searching, where complex query expressions can be built based on selected metadata schemas.

Graph in operation: https://search.researchdata.hu/