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Version: 5.1.2

Versions & changelog


Our versioning policy follows the Semantic Versioning specification. In our case, given a version MAJOR.MINOR.PATCH, we increment the:

  • MAJOR version when the data model of the Graph changes
  • MINOR version when the pipeline (e.g., different deduplication method, different implementation for an enrichment process) or major data sources change
  • PATCH version when the graph data are updated


This section documents all notable changes for each graph version.


Start Date: 2023-03-20 Release Date: 2023-04-04 Dump release: no


  • Crossref dump from February 2023
  • ORCID works without a DOI from March 2023
  • Usage counts from February 2023 (+76% Downloads per Datasource for 2023)
  • Datacite contents from mid March 2023
  • OpenCitations relations from January 2023


Start Date: 2023-02-13 Release Date: 2023-03-01 Dump release: no



  • Crossref dump from January 2023
  • ORCID works without a DOI from January 2023
  • Usage counts from January 2023
  • Datacite contents from mid February 2023
  • OpenCitations relations from December 2022


Start Date: 2023-01-16 Release Date: 2023-01-30 Dump release: no


  • Revised SDG classification: better accuracy, lower coverage (will improve in the next months)


  • Crossref dump from December 2022
  • ORCID works without a DOI from January 2023
  • Usage counts from December 2022
  • DataCite contents from January 2023


Start Date: 2022-12-19 Release Date: 2022-12-28 Dump release: yes



  • FOS and SDGs were removed from the result subjects
  • Measures were removed from the result instance
  • Updated DOIBoost to include publications from Crossref and the works from ORCID with a DOI until November 2022
  • Added ORCID works without a DOI from November 2022