The blog of the OpenCitations Infrastructure

Silvio Peroni

Today, we have published the bi-monthly release of COCI, the OpenCitations Index of Crossref open DOI-to-DOI citations.

More than 733M citations now available in COCI

University of Oxford

David M. Shotton

Very VERY occasionally I read a paper that is so well written, and which addressed the points so accurately and so eloquently, that I rejoice.  The paper by Pettifer

 et al

. entitled

 Ceci n’est pas un hamburger: modelling and representing the scholarly article

that appeared in

 Learned Publishing

last October [1], is one of this special handful.

Comments on the paper Ceci n’est pas un hamburger

As part of the Open Citations Project, Alex Dutton recently completed a graphing plug-in for the Open Citations web site, that permits users to generate different kinds of graphs of citation networks by querying the Open Citation Corpus for a particular article, and either display the network of papers citing that article (input citations), papers cited by that article (output citations), or both.

Like a kid with a new train set!  Exploring citation networks

As previously described, the PubMed Central Open Access subset of journal articles yielded 6,529,815 independent bibliographic records of both citing and cited entities, while our use of the PubMed Entrez API provided a further 2,304,143 bibliographic records for the same cited entities. Before converting these references into RDF to create the Open Citations Corpust, we attempted to remove errors in the data.

Citation correction methods

Chiara Di Giambattista

2021 is just behind us. Since January is “the Monday of the months”, as F. Scott Fitzgerald once wrote[1], it’s a good time to take stock of what happened at OpenCitations during the past year.

Five reasons why 2021 has been a great year for OpenCitations

We want to express our gratitude to the 18 institutional members and customers of the Consortium of Swiss Academic Libraries which have now pledged 89,250 euros to support OpenCitations over the next three years. This generous donation is part of a total funding of

Swiss Institutions pledge 89,250 Euros to OpenCitations

Among the external services used, the

 ORCID Public API

is of crucial importance for the task of author disambiguation. During the OCC ingestion workflow, the main metadata of an article are usually retrieved from the Crossref API.

Using the ORCID Public API for author disambiguation in the OpenCitations Corpus

Scholix Metadata Schema For Exchange Of Scholarly Communication Links

Types, open citations, closed citations, publishers, and participation reports of Crossref entities

COCI CSV dataset of all the citation data

Open Citation: Definition

Initiative aims to break science’s citation paywall

Publishing: Open citations

Software survey: VOSviewer, a computer program for bibliometric mapping

Crowdsourcing open citations with CROCI An analysis of the current status of open citations, and a proposal **Author(s) **Ivan Heibi – ivan.heibi2@unibo.it

 Digital Humanities Advanced Research Centre (DHARC), Department of Classical Philology and Italian Studies, University of Bologna, Bologna, Italy

Silvio Peroni – silvio.peroni@unibo.it

 Digital Humanities Advanced Research Centre (DHARC), Department of Classical Philology and

Crowdsourcing open citations with CROCI

In a previous series of blog posts we proposed the treatment of bibliographic citations as first-class data entities, permitting citations to be endowed with descriptive properties.

COCI, the OpenCitations Index of Crossref open DOI-to-DOI references

OpenCitations is very pleased to announce its collaboration with four new scholarly Research and Development projects that are early adopters of the recently updated OpenCitations Data Model, described in this blog post.

Early adopters of the OpenCitations Data Model

Requirements for citations to be treated as First-Class Data Entities   In my introductory blog post, I listed five requirements for the treatment of citations as first-class data entities.  The first of these requirements is that they must be definable in a machine-readable manner as a member of the class “Citation”, and describable using appropriate ontology terms.

Citations as First-Class Data Entities: Citation Descriptions

What is Related Work? Related Work is a user-friendly Web application developed to provide a means of browsing citation links, as the basis for a planned recommendation service for the best articles to read.

What is Related Work?
 


 Related Work

is a user-friendly Web application developed to provide a means of browsing citation links, as the basis for a planned recommendation service for the best articles to read.

Open Citations and Related Work projects merge

I recently posted a brief description of  an article entitled The Five Stars of Journal Articles, pointing to a preprint of this article in

 Nature Preceedings

.

Five Stars article published in D-Lib Magazine

The Open Biomedical Citations in Context Corpus funded by the Wellcome Trust The Wellcome Trust, which funds research in big health challenges and campaigns for better science, has agreed to fund

 The Open Biomedical Citations in Context Corpus

, a new project to enhance the OpenCitations Corpus, as part of the Open Research Fund programme.

The Wellcome Trust funds OpenCitations

The meaning of the word “dataset” is ambiguous, changing with context.

The meaning of the word “

 dataset

” is ambiguous, changing with context.

Nomenclature for data publications and citations

[The text of this post was updated on 27-09-2013 and 04-04-2017 to reflect a new CrossRef metadata best practice document and a change in their URI.] Today I wrote an open letter to all scholarly journal publishers, available online here, entitled:

 Open your article reference lists for inclusion in the Open Citations Corpus.

In this letter, I request that publishers open the bibliographic citation data in their journal

Open letter to publishers

As an approach towards developing best practice for data citation, I recently wrote a

 Data Citation Best Practice Discussion Document

that is available on Google Docs, and that I have now slightly revised to Version 2 [1]. In that document, I first compared what is recommended by DataCite [2] and by Altman and King [3] with what currently practised by the Dryad Data Repository and what presently occurs ‘in the wild’ in a

How to cite data

Scholarly authoring and publishing is in the throes of a revolution, as the full potential of on-line publishing is explored.

Advantages of Ontological Standards in Scholarly Publishing

If you are a leader of a Library or a Research Institution and would like to learn more about the existing open infrastructures that could help your institution to evolve in the research environment, but you don’t know where to look for, you can now use Infra Finder, a brand-new tool aimed at foster discovery, adoption, and investment for open infrastructure services.

Find OpenCitations on Infra Finder, a new tool to discover and support Open Infrastructures

OpenCitations is seeking applicants for a **one-year Research Fellow position **to be held from April 2023, for which the application

 closing deadline is 28 February 2023

.  Currently, the amount and complexity of the data made available by OpenCitations opens up several issues related to the improvement, scalability and optimisation of its infrastructure.

OpenCitations is hiring: one-year Research Fellow position now open

OpenCitations has happily joined the open-source social media platform joinmastodon.org.

Follow OpenCitations on Mastodon

On September 27, OpenCitations’ director Silvio Peroni, together with Niels Stern (DOAB/OAPEN) and James MacGregor (PKP), held the online workshop “How Open Infrastructure Benefits Libraries” during the Open Access Tage 2021. Open-Access-Tage (Open Access Days) are the annual central platform for the steadily growing

 Open Access and Open Science community from Germany, Austria and Switzerland

,

Open Access&nbsp;Tage&nbsp;2021: valuable insights from the libraries in the German-speaking region

We now seek applicants for a new three-year research fellowship to be held from March 2021, for which the application closing deadline is 7 February 2021. Plan: to strengthen the current technical and computational infrastructure.

OpenAIRE-Nexus is an H2020 project funded by the European Commission which aims at bringing together, within the European Open Science Cloud (EOSC), fourteen new services focused on the development and promotion of Open Science.

 OpenCitations is directly involved

in this project through the Department of Classical Philology and Italian Studies at the University of Bologna.

New research fellowship position to work on the EOSC

A year ago, at the end of 2019, OpenCitations was selected by the Global Sustainability Coalition for Open Science Services (SCOSS, https://scoss.org) for its second round of crowdfunding support, since SCOSS believes that OpenCitations aligns well with Open Science goals and is an innovative service.

Seeking applicants for three-year research fellowship position

OpenCitations is proud to be part of the launch of the Initiative for Open Abstracts, a new cross-publisher initiative calling for the unrestricted availability of abstracts to boost the discovery of research.

The Initiative for Open Abstracts is launched

As introduced in a previous blog post, COCI is the OpenCitations Index of Crossref open DOI-to-DOI references, all released as CC0 material.

New release of COCI: 445M DOI-to-DOI citation links now available

Requirements for citations to be treated as first-class data entities In my introductory blog post, I listed five requirements for the treatment of citations as first-class data entities.  The fifth and final of these requirements is that there must be a Web-based

 identifier resolution service

that takes the citation identifier as input and returns a description of the citation.

Citations as First-Class Data Entities: The Open Citation Identifier Resolution Service

This post introduce two exemplar queries for interrogating the OpenCitations Corpus.

OpenCitations makes available a SPARQL endpoint for querying the data included in the OpenCitations Corpus. While several queries are possible according to the model described in the website (and, with more details, in the official metadata document of the Corpus), we have received some requests by users of the service for exemplar queries.

Querying the OpenCitations Corpus

Following the decision to merge the planned development of the Open Citations Corpus with the

 Related Work

Project, described in the previous blog post, we proposed to develop one underlying data store, one data model and one RDF representation.

Open Citations developments

I am very pleased to announce that last year Ian Bannerman, Managing Director for Journals at Taylor &amp; Francis, confirmed this publisher’s willingness to pilot the opening of the reference lists from articles in 29 of their subscription access journals, as well as from all of their current list of 15 Open Access journals, for inclusion in the Open Citations Corpus.

Taylor &amp; Francis to open article reference lists

Hot on the heels of my announcement on Monday that Nature Publishing Group has agreed to open its articles’ reference lists, I am delighted to announce that

 Science Magazine

, the American Association for the Advancement of Science’s premier global science weekly, together with the other AAAS journals

 Science Signalling

and

 Science Translational Medicine

, will also open their articles’ reference lists, and contribute

Science joins Nature in opening reference citations

The JISC, in response to its invitation to tender, has recently funded Curtis+Cartwright Consulting Ltd, a research and strategy consultancy, to undertake an independent study entitled

 Access to Citation Data: A Cost-Benefit and Risk Review and Forward Look

.  Evidence gathering for the study has just started, and the consultants are due to produce a report on this subject by next February.

Access to Citation Data

Reis

 et al

. (2008) [1] cites an earlier paper from Albert Ko’s research group, Ko

 et al

. (1999) [2]. In conventional parlance, as the following diagram shows, the word “reference” can mean either what is found in the text, what is found in the reference list, the act of citation, or the object of the citation itself, as in the sentence “All the references you will need to prepare for the journal club are on Kevin’s desk”.

Nomenclature for citations and references

The Open Citations Project has aimed to liberate bibliographic references from biomedical research literature as Open Linked Data, using as its starting corpus the Open Access Subset (OASS) of articles within PubMed Central. The greatest problem faced during this project, naively unanticipated before we started, was the extend of incompleteness, noise and errors of various sorts within the reference information extracted from the OASS articles.

Garbage in, garbage out – problems with bibliographic references

In a recent blog post, Heather Piwowar, in discussing the advantages of citing datasets in the reference list of the article, said “No journals have standardized on this approach so far”. However, Pensoft Journals, a publisher that specializes in publishing biodiversity and biological systematics papers, and that has taken the lead in promoting the publication of datasets with DOIs, has exactly such a policy.

Pensoft Journals policy and author guidelines on data publication and citation

FRBR, the

 Functional Requirements for Bibliographic Records

[1] is a general model, proposed by the International Federation of Library Association (IFLA), for describing bibliographic documents. It works for both physical and digital resources and has proved to be very flexible and powerful. One of the most important aspect of FRBR is the fact that it is not associated with a particular metadata schema or implementation.

Extending FRBR within FaBiO

Graffoo*,* a Graphical Framework for OWL Ontologies [1], is a wonderful new open source tool developed by Silvio Peroni that can be used to present the classes, properties and restrictions within OWL ontologies, or sub-sections of them, as clear and easy-to-understand diagrams.

Graffoo, a Graphical Framework for OWL Ontologies

Egon Willighagen, at Uppsala University, has pioneered the use of object properties from CiTO, the Citation Typing Ontology, to characterize bibliographic citations in CiteULike, the free service for managing and discovering scholarly references.  Indeed, it was his use case that persuaded me of the need to generalize CiTO to include indirect citations.

Use of CiTO in CiteULike

OpenCitations Team

One of the biggest challenges faced by modern scientists is information overload. The life sciences are probably the area most affected by it, with almost a million new entries being added to PubMed each year.

JISC Open Citations: Wider Benefits to Sector &amp; Achievements for Host Institution

David writes: Dr Heinrich Hartman is a new colleague of mine, who, having been working in the Mathematical Institute of Oxford University, has just returned to Germany to start a new job in a leading semantic web research group, that of Steffan Staab at the Institute for Web Science and Technologies, University of Koblenz-Landau.

Why openness benefits research

To accompany today’s publication in D-Lib Magazine of the article The Five Stars of Online Journal Articles – a framework for article evaluation highlighted in the previous post, I have today also published The Five Stars Ontology, a simple ontology written in OWL 2 DL that forms part of SPAR, a suite of Semantic Publishing and Referencing Ontologies.

Five Stars Ontology

CiTO v2.0 contains just two main object properties,

 cito:cites

and its inverse

 cito:isCitedBy

, each of which as thirty-two sub-properties. Intentionally, these properties are not constrained as to domain or range, thereby maximising their applicability in a wide range of citation contexts.

Functional clustering of CiTO properties

We are most grateful to the Dutch Research Council (NWO) for its commitment to sustaining the activities and developments of three SCOSS-selected infrastructures (PKP, OpenCitations and ROR) together with the Netherlands Reproducibility Network.

The Dutch Research Council sustains OpenCitations

Silvio Peroni has recently created LODE (Live OWL Documentation Environment;

Using LODE for ontology visualization

Last April, Martin Fenner launched Rogue Scholar, an archive of science blogs aiming to index full-text of blog posts, establish a full-text search, and register DOIs and metadata for all posts.

The OpenCitations blog posts are now archived on Rogue Scholar with DOIs

Last March, the  Coalition for Advancing Research Assessment (CoARA) launched its call for members to propose Working Groups and National Chapters.

OpenCitations is part of the CoARA Working Group Towards Open Infrastructures for Responsible Research Assessment (OI4RRA)

Discover DOCI, the OpenCitations Index of Datacite open DOI-to-DOI citations

We’re excited to introduce

 DOCI, the OpenCitations Index of Datacite open DOI-to-DOI citations

, a new tool containing citations derived from publications bearing DataCite DOIs to other DOI-identified publications, harvested from DataCite.

Discover DOCI, the index of open citations from DataCite

In March, The Global Sustainability Coalition for Open Science Services (SCOSS) celebrated, together with the generous funders and the projects involved (including OpenCitations), the achievement of an amazing milestone: a total of 4 million Euros raised so far for supporting the growth and development of Open Science Infrastructures.

Posted on August 10th 2022 by Chiara Di Giambattista  ← Previous post: The OpenCitations Roadmap is now publicly available on Trello  → Next post: New documents that present OpenCitations’ mission, unique benefits, present status and future plans  In March, The Global Sustainability Coalition for Open Science Services (SCOSS) celebrated, together with the generous funders and the projects involved (including OpenCitations), the achievement of an

Two years of achievements within the ‘SCOSS family’ (and it’s not over yet!)

This post was first published on QUERTY: musings from the rabbit hole, a blog by Silvio Peroni In the scholarly ecosystem, a bibliographic citation is a conceptual directional link from a citing entity to a cited entity, used to acknowledge or ascribe credit for the contribution made by the author(s) of the cited entity.

*This post was first published on *

 QUERTY: musings from the rabbit


 hole

,

 a blog by Silvio Peroni

In the scholarly ecosystem, a bibliographic citation is a

 conceptual

directional link from a citing entity to a cited entity, used to acknowledge or ascribe credit for the contribution made by the author(s) of the cited entity.

Transparency meets open citations

“*What role does ‘open’ play in making this project special?”*  This apparently easy, but not banal, question was asked in the Open Publishing Awards nomination form, and at OpenCitations we prefaced our answer to it by stating “For OpenCitations, ‘open’ is the crucial value and the final purpose.” We consider the free availability of bibliographic citation data to be a necessary condition for the establishment of an open knowledge graph, and

OpenCitations receives the Open Publishing Award in Open Data

Research Information

can be defined as an information (sometimes referred to as metadata) relating to the conduct and communication of research.

OpenCitations supports the Barcelona Declaration on Open Research Information for a fundamental transformation in the research information landscape

No-one is quite sure of the total number of scholarly publications within the global corpus. Indeed that number will be strongly influenced by the degree to which, in addition to books and journal articles, one includes within the definition of scholarly publications ‘grey literature’ such as reports published by official bodies, patents, etc.

Academia’s missing references

The interconnection between Wikipedia and Wikidata is now larger than ever.   The Wikipedia Citations dataset currently includes around 30M citations from Wikipedia pages to a variety of sources – of which 4M are to scientific publication.

Wikipedia Citations in Wikidata

The initial vision

Now that OpenCitations is hosting over one billion freely available scholarly bibliographic citations, this is perhaps an opportune moment to look back to the start of this initiative.

From little acorns . . . A retrospective on OpenCitations

We congratulate and thank Elsevier, the world’s largest academic publisher, for endorsing the DORA Declaration on Research Assessment (https://sfdora.org/), thereby joining the hundreds of other publishers and scientific organizations which have endorsed DORA over the previous eight years, and also for making a commitment to open the references from all its journal articles submitted to Crossref.

Elsevier endorses DORA and opens its journal article reference lists

Last night I watched the Netflix documentary

 The Social Dilemma

(https://www.netflix.com/title/81254224), in which former employees of the big Silicon Valley social media companies expose the serious and sometimes tragic or even fatal consequences that social media may have on individual lives. These social media services are run by commercial companies under pressure from shareholders to make ever increasing profits.

The Social Dilemma and open academic analytics

Several things and events happened during the past month and a half which involved us directly as a participant. Here we introduce some of the most significant ones: a) our interview during a Fireside Chat at the Open Publishing Fest; b) the SCOSS presentation of a poster about us during LIBER 2020; c) the two new short-term open positions (application deadline: 23 July 2020) for our Wellcome Trust funded project;

Several important recent events have involved OpenCitations directly as a participant. Here we introduce some of the most significant ones: Our interviews during a

 Fireside Chat

with John Chodacki during the Open Publishing Fest; The SCOSS poster about OpenCitations and the other two selected infrastructures during

 LIBER 2020

, which won the LIBER 2020 Peoples Choice Poster Award;

OpenCitations updates: interviews, outreach, research positions, citations

OpenCitations is managed by the newly formed Research Centre for Open Scholarly Metadata at the University of Bologna. The new International Advisory Board for OpenCitations is formally part of the Research Centre for Open Scholarly Metadata. The Board has been created to assist the Directors of OpenCitations by providing stakeholder community input that will guide the future activities and direction of OpenCitations.

As mentioned in an earlier blog post, OpenCitations has been selected by SCOSS for its second round of crowd-funding support from stakeholders within the open scholarship community.

Announcing the Research Centre for Open Scholarly Metadata and the International Advisory Board for OpenCitations

The memorable date 20/02/2020 saw the publication by MIT Press of the first issue of Volume One of a new journal,

 Quantitative Science Studies

(QSS), the official open access journal of the International Society for Scientometrics and Informetrics (ISSI). QSS’s Editor in Chief is Ludo Waltman (CWTS, University of Leiden, Netherlands), Vincent Larivière (Université de Montréal, Montreal, Quebec, Canada) and Staša Milojević

The first issue of Quantitative Science Studies

Principles for Open Scholarly Infrastructures-v1

OpenCitations is an infrastructure organization for open scholarship dedicated to the publication of open bibliographic and citation data.

OpenCitations described

Conference Linked Data: The ScholarlyData Project

OpenAIRE LOD Services: Scholarly Communication Data as Linked Data

One Year of the OpenCitations Corpus

Biotea: semantics for Pubmed Central

The Semantic Lancet Project: A Linked Open Dataset for Scholarly Publishing

FaBiO and CiTO: Ontologies for describing bibliographic resources and citations

The YASGUI family of SPARQL clients1

OSCAR: A Customisable Tool for Free-Text Search over SPARQL Endpoints

Introducing Wikidata to the Linked Data Web

Zotero: A bibliographic assistant to researcher

Usage stats of COCI in OpenCitations

Tearing Down Science's Citation Paywall, One Link At A Time

The SPAR Ontologies

The OpenCitations Data Model

Open Citation Identifier: Definition

None

The FAIR Guiding Principles for scientific data management and stewardship

Modelling OWL Ontologies with Graffoo

COCI, the OpenCitations Index of Crossref open DOI-to-DOI citations **Author(s) **Ivan Heibi – ivan.heibi2@unibo.it

 Digital Humanities Advanced Research Centre (DHARC), Department of Classical Philology and Italian Studies, University of Bologna, Bologna, Italy

Silvio Peroni – silvio.peroni@unibo.it

 Digital Humanities Advanced Research Centre (DHARC), Department of Classical Philology and Italian Studies, University of Bologna,

COCI, the OpenCitations Index of Crossref open DOI-to-DOI citations

In-Text Reference Pointer Identifier: Definition

Rationale   Readers of this blog will be familiar with Open Citation Identifiers (OCIs), described in an earlier post and formally defined in [1]. OCIs enable bibliographic citations, treated as first class information entities, to be uniquely identified and referenced, and are used to identify the &gt;624 million individual citations indexed in the latest release of COCI, the OpenCitations Index of Crossref open DOI-to-DOI citations, as

Introducing InTRePIDs – In-Text Reference Pointer Identifiers

We are now proud to announce the third release of COCI, which contains more than 624 million DOI-to-DOI citation links coming from both ‘the ‘Open’ and the ‘Limited’ sets of Crossref reference data.

COCI is the OpenCitations Index of Crossref open DOI-to-DOI citations, all released as CC0 material, and is described in the article Heibi I, Peroni S, Shotton D (2019). Software review: COCI, the OpenCitations Index of Crossref open DOI-to-DOI citations.

 Scientometrics

121(2): 1213-1228.

More than 624 million citations now available on COCI

Setting our bibliographic references free: towards open citation data

Building Citation Networks with SPACIN

Funders should mandate open citations

The OpenCitations Enhancement Project Final report for the Alfred P. Sloan Foundation

 Report period: 1st May 2017 – 30 November 2018.

The OpenCitations Enhancement Project – final report

Shotton CitationIDs PIDapalooza 24-01-18 REVISED.pptx

Hallmarks of Cancer: The Next Generation

Requirements for citations to be treated as First-Class Data Entities   In my introductory blog post, I listed five requirements for the treatment of citations as first-class data entities.  The fourth of these requirements is that they must be identifiable using a global persistent identifier scheme.

Citations as First-Class Data Entities: Open Citation Identifiers

Citations are now centre stage   As a result of the Initiative for Open Citations (I4OC), launched on April 6 last year, almost all the major scholarly publishers now open the reference lists they submit to Crossref, resulting in more than half a billion references being openly available via the Crossref API.

Citations as First-Class Data Entities: Introduction

Requirements for citations to be treated as First-Class Data Entities   In my introductory blog post, I listed five requirements for the treatment of citations as first-class data entities.  The third of these requirements is that they must be storable, searchable and retrievable in an open database designed for bibliographic citations.

Citations as First-Class Data Entities: The OpenCitations Corpus

Good news!  Today, on January 16th 2018, Oxford University Press (OUP) announced its participation in the Initiative for Open Citations, and requested Crossref to turn on reference sharing for all OUP deposited references from more than half a million publications.  Oxford University Press is the largest university press in the world, publishing in 70 languages and 190 countries.

Oxford University Press opens its references!

Some folk are confused, but OpenCitations and the Initiative for Open Citations, despite the similarity of their names, are two distinct organizations.

OpenCitations and the Initiative for Open Citations: A Clarification

The OpenCitations Enhancement Project funded by Sloan The Alfred P. Sloan Foundation, which funds research and education in science, technology, engineering, mathematics and economics, including a number of key technology projects relating to scholarly communication, has agreed to fund

 The OpenCitations Enhancement Project

, a new project to develop and enhance the OpenCitations Corpus.

The Sloan Foundation funds OpenCitations

Since 1st January 2018, Crossref has had a new reference distribution policy, described at https://www.crossref.org/reference-distribution/.  There are three possible options for setting the reference distribution preference from which a publisher can choose, these being ‘Closed’, ‘Limited’ and ’Open“.  If the ‘Closed’ option is chosen, the references will only be used for the Crossref Cited-by service, and are not distributed via any of the

The new Crossref reference distribution policy

In October 2015, I asked Silvio Peroni, my long-term colleague in the development of the SPAR Ontologies, to become Co-Director of the Open Citations Project, and to work with me in taking forward the prototype Open Citations Corpus (OCC), originally developed at the University of Oxford with the support of Jisc, with the aim of developing it into a production service of real use to scholars.

Open Citations is dead.  Long live OpenCitations.

Ongoing work on the Open Citations extensions project is now reaching the point of visualising – at very much a prototype level at this stage – the outputs of our earlier efforts to import and index the PubMed Central Open Access subset and arXiv. Earlier in this project I asked David to specify a list of questions that he thought researchers might hope to answer by querying our Open Citations Corpus;

Open Citations – Doing some graph visualisations

JATS, the Journal Article Tag Suite, defines a vocabulary of XML elements and attributes used to describe the content and metadata of journal articles.  As described in the previous post, we have mapped the metadata elements of the JATS Journal Publishing Tag Set to RDF, so that publishers’ XML article metadata encoded using JATS might become part of the web of linked data.

An entry form for JATS metadata

JATS, the Journal Article Tag Suite, defines a vocabulary of XML elements and attributes used to describe the content and metadata of journal articles.  In this post, I describe the mapping of JATS to RDF, so that publishers’ XML article metadata encoded using JATS might become part of the web of linked data.

Mapping JATS to RDF

I am delighted to announce that Cathy Kennedy*,* OUP’s Senior Publisher for Journals, has just written to me as follows:  “Oxford University Press is delighted to support the Open Citation Corpus initiative in the interest of furthering and disseminating scholarship.

Oxford University Press to support Open Citations

DataCite is an international organization responsible for the DOIs (Digital Object Identifiers) issued for research datasets.  For each DOI issued, DataCite requires the data publisher to create and submit to DataCite descriptive metadata that can aid resource discovery.

OpenCitations blog

Openness of non-Elsevier references

Elsevier references dominate those that are not open at Crossref

Milestone for I4OC – open references at Crossref exceed 50%