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COCI N-Triples dataset of all the citation data

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posted on 19.11.2018, 13:21 by OpenCitations ​OpenCitations ​
This dataset contains all the citation data (in N-Triples format) included in COCI, released on the 12th of November 2018. 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:
  • 445,826,118 citations;
  • 46,534,705 bibliographic resources.
The size of the zipped archive is 22 GB, while the size of the unzipped N-Triples file is 481 GB.

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

Funding

Alfred P. Sloan Foundation grant number G‐2017‐9800

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