OpenCitations (established in 2010) is a project aiming to publish

open Open or OPEN may refer to: Music * Open (band), Australian pop/rock band * The Open (band), English indie rock band * ''Open'' (Blues Image album), 1969 * ''Open'' (Gerd Dudek, Buschi Niebergall, and Edward Vesala album), 1979 * ''Open'' (Go ...

bibliographic

citation A citation is a reference to a source. More precisely, a citation is an abbreviated alphanumeric expression embedded in the body of an intellectual work that denotes an entry in the bibliographic references section of the work for the purpose o ...

information in RDF. It produces the "OpenCitations Corpus" citation database in the process.

Datasets

OpenCitations publishes the following datasets which encompass bibliographic data, citation metadata, and in-text reference data. The datasets can be accessed via

SPARQL SPARQL (pronounced ":wikt:sparkle, sparkle", a recursive acronym for SPARQL Protocol and RDF Query Language) is an RDF query language—that is, a Semantic Query, semantic query language for databases—able to retrieve and manipulate data sto ...

, a

REST REST (Representational State Transfer) is a software architectural style that was created to describe the design and guide the development of the architecture for the World Wide Web. REST defines a set of constraints for how the architecture of ...

API, as dumps on

Figshare Figshare is an online open access repository where researchers can preserve and share their research outputs, including figures, datasets, images, and videos. It is free to upload content and free to access, in adherence to the principle of open ...

, as individual bibliographic entities, or using OSCAR (OpenCitations RDF Search Application) or Lucinda (The OpenCitations RDF Resource Browser).

OpenCitations Corpus

The OpenCitations Corpus (OCC) is an open repository of scholarly citation data. The repository is released under the CC0 public domain to ensure that the scholarly citation data is open to all. As of March 19, 2022, the OCC has ingested the references from 326,743 citing bibliographic resources and contains information about 13,964,148 citation links to 7,565,367 cited resources.

OpenCitations Indexes

The OpenCitations Indexes are collections of citations, which treat citations as first-class data objects that include citation metadata, as well as identifiers to the citing and cited works. For example, COCI is the OpenCitations Index of Crossref open DOI-to-DOI citations. A 2021 comparison with other citations tools found that COCI was the smallest in coverage, and a 2020 study found that 54% of the citation links in

Web of Science The Web of Science (WoS; previously known as Web of Knowledge) is a paid-access platform that provides (typically via the internet) access to multiple databases that provide reference and citation data from academic journals, conference proceedi ...

were also in COCI.

Open Biomedical Citations in Context Corpus

The Open Biomedical Citations in Context Corpus (CCC) is a database of citations providing in-text references, extending OpenCitations records with in-text reference pointer information.

References

External links