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Related papers: COCI, the OpenCitations Index of Crossref open DOI…

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In this paper, we analyse the current availability of open citations data in one particular dataset, namely COCI (the OpenCitations Index of Crossref open DOI-to-DOI citations; http://opencitations.net/index/coci) provided by OpenCitations.…

Digital Libraries · Computer Science 2019-06-24 Ivan Heibi , Silvio Peroni , David Shotton

While Crossref makes available more than 1.8 billion bibliographic references from publications for which it provides a DOI, more than 698 million of these references do not specify a DOI, making the creation of a formal citation link from…

Digital Libraries · Computer Science 2025-11-25 Matteo Guenci , Ivan Heibi , Chiara Parravicini , Silvio Peroni , Marta Soricetti

OpenCitations is an infrastructure organization for open scholarship dedicated to the publication of open citation data as Linked Open Data using Semantic Web technologies, thereby providing a disruptive alternative to traditional…

Digital Libraries · Computer Science 2020-02-24 Silvio Peroni , David Shotton

This work aims to identify classes of DOI mistakes by analysing the open bibliographic metadata available in Crossref, highlighting which publishers were responsible for such mistakes and how many of these incorrect DOIs could be corrected…

This article presents the OpenCitations Index, a collection of open citation data maintained by OpenCitations, an independent, not-for-profit infrastructure organisation for open scholarship dedicated to publishing open bibliographic and…

Digital Libraries · Computer Science 2024-10-01 Ivan Heibi , Arianna Moretti , Silvio Peroni , Marta Soricetti

OpenCitations Meta is a new database for open bibliographic metadata of scholarly publications involved in the citations indexed by the OpenCitations infrastructure, adhering to Open Science principles and published under a CC0 license to…

Digital Libraries · Computer Science 2026-04-24 Arcangelo Massari , Fabio Mariani , Ivan Heibi , Silvio Peroni , David Shotton

Books have been widely used to share information and contribute to human knowledge. However, the quantitative use of books as a method of scholarly communication is relatively unexamined compared to journal articles and conference papers.…

Digital Libraries · Computer Science 2019-12-09 Yongjun Zhu , Erjia Yan , Silvio Peroni , Chao Che

Open citation data can improve the transparency and robustness of scientific portfolio analysis, improve science policy decision-making, stimulate downstream commercial activity, and increase the discoverability of scientific articles. Once…

Digital Libraries · Computer Science 2021-06-21 B. Ian Hutchins

We present an analysis of data citation practices based on the Data Citation Index from Thomson Reuters. This database launched in 2012 aims to link data sets and data studies with citations received from the other citation indexes. The DCI…

Digital Libraries · Computer Science 2015-05-20 Nicolas Robinson-Garcia , Evaristo Jiménez-Contreras , Daniel Torres-Salinas

New sources of citation data have recently become available, such as Microsoft Academic, Dimensions, and the OpenCitations Index of CrossRef open DOI-to-DOI citations (COCI). Although these have been compared to the Web of Science (WoS),…

Digital Libraries · Computer Science 2021-02-02 Alberto Martín-Martín , Mike Thelwall , Enrique Orduna-Malea , Emilio Delgado López-Cózar

Wikipedia's contents are based on reliable and published sources. To this date, relatively little is known about what sources Wikipedia relies on, in part because extracting citations and identifying cited sources is challenging. To close…

Digital Libraries · Computer Science 2020-11-24 Harshdeep Singh , Robert West , Giovanni Colavizza

Citation indexes are by now part of the research infrastructure in use by most scientists: a necessary tool in order to cope with the increasing amounts of scientific literature being published. Commercial citation indexes are designed for…

Digital Libraries · Computer Science 2022-05-17 Giovanni Colavizza , Silvio Peroni , Matteo Romanello

Coreference annotation is an important, yet expensive and time consuming, task, which often involved expert annotators trained on complex decision guidelines. To enable cheaper and more efficient annotation, we present CoRefi, a web-based…

Computation and Language · Computer Science 2020-10-07 Aaron Bornstein , Arie Cattan , Ido Dagan

The need for open scientific knowledge graphs is ever increasing. While there are large repositories of open access articles and free publication indexes, there are still few free knowledge graphs exposing citation networks, and often their…

Digital Libraries · Computer Science 2021-05-19 Federica Bologna , Angelo Di Iorio , Silvio Peroni , Francesco Poggi

OpenCitations is an independent not-for-profit infrastructure organization for open scholarship dedicated to the publication of open bibliographic and citation data by the use of Semantic Web (Linked Data) technologies. OpenCitations…

Digital Libraries · Computer Science 2022-06-16 Chiara Di Giambattista , Ivan Heibi , Silvio Peroni , David Shotton

Recent initiatives advocating responsible, transparent research assessment have intensified the call to use open research information rather than proprietary databases. This study evaluates the coverage and citation representation of…

Digital Libraries · Computer Science 2026-04-16 Erica Andreose , Ivan Heibi , Silvio Peroni , Leonardo Zilli

To analyse the outcomes of the funding they provide, it is essential for funding agencies to be able to trace the publications resulting from their funding. We study the open availability of funding data in Crossref, focusing on funding…

Digital Libraries · Computer Science 2022-07-13 Alexis-Michel Mugabushaka , Nees Jan van Eck , Ludo Waltman

The paper presents first results of the CitEcCyr project funded by RANEPA. The project aims to create a source of open citation data for research papers written in Russian. Compared to existing sources of citation data, CitEcCyr is working…

Digital Libraries · Computer Science 2017-10-03 Jose Manuel Barrueco , Thomas Krichel , Sergey Parinov , Victor Lyapunov , Oxana Medvedeva , Varvara Sergeeva

As an important biomedical database, PubMed provides users with free access to abstracts of its documents. However, citations between these documents need to be collected from external data sources. Although previous studies have…

Digital Libraries · Computer Science 2021-11-02 Zhentao Liang , Jin Mao , Kun Lu , Gang Li

The OpenCitations organization is working on ingesting citation data and bibliographic metadata directly provided by the community (e.g., scholars and publishers). The aim is to improve the general coverage of open citations, which is still…

Digital Libraries · Computer Science 2022-09-26 Arcangelo Massari , Ivan Heibi
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