COCI N-Triples dataset of all the citation data

2020-07-04T11:20:58Z (GMT) by OpenCitations ​
This dataset contains all the citation data (in N-Triples format) included in COCI, released on 4 July 2020. In particular, any citation in the dataset, defined as an individual of the class cito:Citation, includes the following information:
  • [citation IRI] the Open Citation Identifier (OCI) for the citation, defined in the final part of the URL identifying the citation (https://w3id.org/oc/index/coci/ci/[OCI]);
  • [property "cito:hasCitingEntity"] the citing entity identified by its DOI URL (http://dx.doi.org/[DOI]);
  • [property "cito:hasCitedEntity"] the cited entity identified by its DOI URL (http://dx.doi.org/[DOI]);
  • [property "cito:hasCitationCreationDate"] the creation date of the citation (i.e. the publication date of the citing entity);
  • [property "cito:hasCitationTimeSpan"] the time span of the citation (i.e. the interval between the publication date of the cited entity and the publication date of the citing entity);
  • [type "cito:JournalSelfCitation"] it records whether the citation is a journal self-citations (i.e. the citing and the cited entities are published in the same journal);
  • [type "cito:AuthorSelfCitation"] it records whether the citation is an author self-citation (i.e. the citing and the cited entities have at least one author in common).
This version of the dataset contains:
  • 721,655,392 citations;
  • 58,876,621 bibliographic resources.
The size of the zipped archive is 36 GB, while the size of the unzipped N-Triples file is 767 GB.

Additional information about COCI can be retrieved in the official webpage and in the introductory blog post in the OpenCitations blog.