No. The Culture Knowledge Graph is not a storage location, but is intended as an index of metadata about research data on tangible and intangible cultural assets. Hence resources must have resolvable IRIs. Only some basic information about the resources held by the data providers is stored in the Culture Knowledge Graph. If you are interested in publishing your data and are looking for a repository, please have a look at our curated repository list of subject-specific and generic repositories for the NFDI4Culture communities.
The use of authority identifiers and classifiers increases the overall data quality and allows the Culture Knowledge Graph to link data. The graph currently handles GeoNames, Wikidata, GND, Iconclass, VIAF, and Getty AAT. In addition, any use of such external identifiers is welcome, especially those that are also mapped in Wikidata.
Before initiating the transformation process, it is always recommended to contact the NFDI4Culture Helpdesk with request type “Culture Knowledge Graph Data Integration”. The Culture Knowledge Graph team can arrange for an appointment to go through the relevant steps.
Data feeds are integrated into the Culture Knowledge Graph via an ETL environment, the so-called Culture Knowledge Graph Kitchen. It contains a function to periodically trigger a re-harvest once the feed has been updated based on a modification date specified in the data feed.
By integrating data into the Culture Knowledge Graph, it is made available in the same context as various other resources from the fields of tangible and intangible cultural heritage. This makes research data more findable through a single access point, more reusable via SPARQL, and more interoperable through a unified schema, the NFDI4Culture Ontology (CTO). However, the integration requires the resources to be available via resolvable IRIs, and identifiers from authority files and controlled vocabularies also need to be used by the data provider. You can check the FAIRness of your data via the NFDI4Culture FAIR Check.
Data is integrated into the Culture Knowledge Graph via so-called data feeds. If data portals contain extensive metadata on multiple resources, these can be integrated as individual data feeds. Potential data feeds may be identified in a joint meeting with the Culture Knowledge Graph team arranged via the NFDI4Culture Helpdesk.
The integration of data feeds is currently being carried out for data of institutions that participate in or cooperate with NFDI4Culture.
Yes. In principle, it is also possible to integrate data from providers who are not yet formally involved in NFDI4Culture. If you are interested, please contact the NFDI4Culture Helpdesk with request type “Culture Knowledge Graph Data Integration”.
CIDOC CRM is an important reference model for the NFDI4Culture communities. A mapping routine based on CIDOC CRM is planned together with NFDI4Memory.
Data providers should keep sovereignty over their data. Hence, the Culture Knowledge Graph focuses on a small set of information to connect research data via metadata and then link to the complete resource on the data provider’s website.
All integrated metadata on research data in the Culture Knowledge Graph carries a CC0 license. Please note, however, that even though URLs of image representations and full records, for example, are CC0-licensed, the actual images and records may carry different licenses/rights statements. These are described in the integrated metadata.