Crossref relationships involving research organisations

This dataset contains relationships involving research organisations deposited by Crossref members and discovered by an automated affiliation matching strategy. It includes data deposited until the end of March 2025. The following relationships are included:

• contributor’s affiliations
• institutional contributors
• work’s institutions
• grant investigator’s affiliations

The dataset contains:

• 140,906,929 total assertions
• 1,014,325 (0.7%) assertions contain a ROR ID deposited by Crossref members
• 94,988,729 (67%) assertions contain a ROR ID discovered by an automated affiliation matching strategy

The dataset contains fields:

• DOI (string): the DOI of the source work
• relationship (contributor-affiliation, institutional-contributor, institution, or investigator-affiliation): the type of the relationship with the organisation
• contributor-role (author, editor, chair, or translator): contributor's role, if the relationship is contributor-affiliation or institutional-contributor
• contributor (object): contributor's metadata, if the relationship is contributor-affiliation
• investigator-role (investigator, lead-investigator, or co-lead-investigator): grant investigator's role, if the relationship is investigator-affiliation
• investigator (object): grant investigator's metadata, if the relationship is investigator-affiliation
• seq_num (int): sequence number of the contributor, investigator, or institution in the original work (starts from 1)
• organisation-string (string): string representing the organisation that was matched
• ror-id (string): ROR ID of the organisation, either supplied by the publisher or the matching strategy
• ror-id-asserted-by (publisher or matching): whether the ROR ID was supplied by the publisher or the matching strategy

Contributors and investigators have the following fields: given, family, suffix, alternate-name, ORCID.

The code of the affiliation matching strategy is available here.