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Dictionary terms
20 resultsDOI tombstone
A tombstone page served at the resolved URL of a DOI after the underlying resource has been withdrawn, providing withdrawal information and metadata while ensuring the DOI itself continues to resolve.
DOI suffix
The portion of a DOI after the first forward slash, assigned by the registrant within their issued DOI prefix, identifying the specific object; can contain any Unicode characters with the case-insensitivity rule applied during comparison.
DOI prefix
The leading portion of a DOI before the first forward slash, of the form 10.NNNN where 10 is the directory indicator for DOI under the Handle System and NNNN is a numeric (or alphanumeric) string assigned by the DOI Registration Agency to a specific registrant.
DataCite DOI
A DOI registered through DataCite, the DOI Registration Agency that serves research data, software, samples, dissertations, instruments, and other non-article research outputs, accompanied by metadata in the DataCite Metadata Schema.
Crossref DOI
A DOI registered through Crossref, the DOI Registration Agency for scholarly publications (journals, books, conference proceedings, preprints, peer reviews, grants), accompanied by metadata deposited in Crossref's XML schema.
DOI
Digital Object Identifier (ISO 26324), a persistent identifier for an entity (typically a research output) consisting of a prefix assigned to a registrant by a DOI Registration Agency and a suffix assigned by the registrant, resolvable as an HTTPS URI under https://doi.org/.
Project metadata
The structured descriptive data about a research project, including title, abstract, dates, funder, award number, PI, contributors, institutions, scope, keywords, outputs, and identifiers (RAiD, ORCID, ROR, DOI), used for discovery, reporting, and linkage.
Project ID (RAiD-anchored)
A persistent, machine-actionable identifier for a research project, typically issued under the Research Activity Identifier (RAiD) standard ISO 23527, used to unambiguously identify the project across systems, funders, institutions, and outputs.
Output legacy planning
The explicit planning, typically conducted late in execution and at closeout, for the long-term stewardship, accessibility, and re-use of project outputs (data, software, publications, prototypes, networks) beyond the project's funded lifetime.
Archive phase
The post-closeout lifecycle phase during which project records, datasets, code, and documentation are deposited in appropriate repositories for long-term preservation, access, and possible re-use.
Open infrastructure (POSI principles)
Scholarly infrastructure that is community-governed, financially sustainable, and operationally transparent, in alignment with the Principles of Open Scholarly Infrastructure (POSI).
Output diversification
The recognition in research assessment of a wide range of research outputs beyond journal articles, including datasets, software, protocols, registered reports, policy briefs, creative works and practitioner publications.
Relative Citation Ratio (RCR, NIH)
An article-level field-normalised citation metric developed by the US National Institutes of Health, expressing an article's citations per year relative to the median in the article's co-citation network, with a value of 1.0 corresponding to NIH-funded median performance.
Metric Tide Report
The 2015 independent review of the role of metrics in UK research assessment, commissioned by HEFCE and chaired by James Wilsdon, which introduced the concept of 'responsible metrics'.
Leiden Manifesto
A 2015 set of ten principles for the responsible use of quantitative indicators in research evaluation, authored by Hicks, Wouters, Waltman, de Rijcke and Rafols.
Hong Kong Principles for Assessing Researchers
A set of five principles published in 2020 to guide the assessment of researchers in ways that reward research integrity and trustworthy practice rather than productivity alone.
DMP active phase
The phase of the DMP lifecycle during project execution, when the plan is iteratively updated as data are actually generated, processed, and deposited.
Machine-actionable DMP (maDMP)
A Data Management Plan expressed in a structured, machine-readable format (typically JSON conforming to the RDA DMP Common Standard) that enables automated exchange, validation, and updating between systems such as DMP tools, repositories, CRIS/RIMS, and funder portals.
Dataset landing page
The human-readable web page that a dataset's persistent identifier (typically a DataCite DOI) resolves to, presenting the dataset's title, creators, description, identifiers, dates, version history, related works, access conditions, and a link to download or request the data.
Generalist repository
A repository that accepts research outputs from any discipline, applying domain-agnostic curation and discovery, and serving as a deposit destination for outputs that have no natural discipline-specific home or whose authors prefer a single multidisciplinary venue.
Picklists
1 resultNews & perspectives
10 resultsNews · 2026-06-23
Open Peer Review Reports as Citable Scholarly Outputs: Assigning DOIs to Reviews
Introduction The strategic advancement of Open Peer Review Reports as Citable Scholarly Outputs: Assigning DOIs to Reviews is transforming how modern academic institutions catalog, preserve, and evaluate scientific outputs. In an era dominated by rapid open-science transitions and complex funding mandates, establishing unified metadata frameworks, secure persistent identifiers, and collaborative repositories is essential for ensuring […]
News · 2026-06-21
GitHub and Zenodo Integration: Minting DOIs for Research Code Releases
Introduction The strategic advancement of GitHub and Zenodo Integration: Minting DOIs for Research Code Releases is transforming how modern academic institutions catalog, preserve, and evaluate scientific outputs. In an era dominated by rapid open-science transitions and complex funding mandates, establishing unified metadata frameworks, secure persistent identifiers, and collaborative repositories is essential for ensuring institutional transparency […]
News · 2026-06-20
Crossref and the DOI Registration Agencies
Crossref and DataCite are the two best-known DOI registration agencies, appointed under the DOI system to register identifiers and curate metadata. This explainer covers metadata deposit, reference linking, Cited-by, and how Crossref and DataCite specialise.
News · 2026-06-20
The PID graph: connecting ORCID, ROR, DOI and RAiD into a research knowledge graph
Persistent identifiers are most powerful not in isolation but in connection. The PID graph links ORCID, ROR, DOI and RAiD through open metadata so that people, organisations, outputs and projects form a navigable research knowledge graph — provided the connecting metadata stays open.
News · 2026-06-18
What Is a DOI? The Handle System and DOI Resolution Explained
A Digital Object Identifier (DOI) is a persistent, unique string that identifies a research output and resolves to its current online location. This explainer covers DOI structure, the Handle System, ISO 26324 and the agencies that assign them.
News · 2026-06-18
DOI vs URL: Why Permanent Links Persist and Web Addresses Decay
A DOI is a persistent identifier that resolves to a resource’s current location through the Handle System, while a plain URL points to a fixed web address that can break when a page moves. Here is how each works and when to use them.
News · 2026-06-12
The Evolution of DOIs: Versioning, Metadata Completeness, and Scholarly Infrastructure Integrity
The Strategic Importance of Digital Object Identifiers (DOIs) At the core of the global scholarly infrastructure sits the Digital Object Identifier (DOI). A DOI is a persistent, unique alphanumeric string assigned by registration agencies (primarily Crossref and DataCite) to identify academic content—such as journal articles, datasets, book chapters, open-source software, and research grants—permanently on the […]
News · 2026-06-09
The five-PID stack: ORCID, ROR, RAiD, DOI and IGSN working together
Persistent identifiers are most powerful not in isolation but as a connected stack. How ORCID, ROR, RAiD, DOI and IGSN each identify one kind of entity, and how they interlock into a research graph.
News · 2026-03-18
Persistent identifiers in 2026: ORCID + ROR + RAiD + DOI
The PID quartet that anchors modern research metadata: how ORCID, ROR, RAiD, and DOIs interlock in 2026, and what’s still broken at the crosswalk layer.
News · 1970-01-01
DOI Versioning: Concept DOIs, Version DOIs and Citing the Right Thing
Research outputs are no longer static. Datasets are corrected and extended, software is released in successive versions, and preprints are revised in response to feedback. This dynamism creates a persistent identifier problem: should a citation point to a specific, frozen version, or to the evolving work as a whole? The DataCite concept DOI and version DOI model, implemented most prominently by Zenodo, answers this by minting a concept DOI that always resolves to the latest version alongside distinct version DOIs for each release. This article examines the DataCite concept and version DOI model, Crossref’s handling of versioned content, how preprint servers manage versions, the isVersionOf and hasVersion relationship types in the DataCite Metadata Schema, software versioning through the Zenodo-GitHub integration, and why citing a specific version matters for reproducibility.
