When each line of code is written it is surrounded by a sea of context: who in the community this is for, what problem we’re trying to solve, what technical assumptions we’re making, what we already tried but didn’t work, how much coffee we’ve had today. All of these have an effect on the software we write.
By the time the next person looks at that code, some of that context will have evaporated.
It turns out that one of the things that is really difficult at Crossref is checking whether a set of Crossref credentials has permission to act on a specific DOI prefix. This is the result of many legacy systems storing various mappings in various different software components, from our Content System through to our CRM. To this end, I wrote a basic application, credcheck, that will allow you to test a Crossref credential against an API.
Subject classifications have been available via the REST API for many years but have not been complete or reliable from the start and will soon be deprecated. dfdfd
The subject metadata element was born out of a Labs experiment intended to enrich the metadata returned via Crossref Metadata Search with All Subject Journal Classification codes from Scopus. This feature was developed when the REST API was still fairly new, and we now recognize that the initial implementation worked its way into the service prematurely.
Crossref and DOAJ share the aim to encourage the dissemination and use of scholarly research using online technologies and to work with and through regional and international networks, partners, and user communities for the achievement of their aims to build local institutional capacity and sustainability. Both organisations agreed to work together in 2021 in a variety of ways, but primarily to ‘encourage the dissemination and use of scholarly research using online technologies, and regional and international networks, partners and communities, helping to build local institutional capacity and sustainability around the world.
The ‘research nexus’ is the vision to which we aspire:
A rich and reusable open network of relationships connecting research organizations, people, things, and actions; a scholarly record that the global community can build on forever, for the benefit of society.
The research nexus goes beyond the basic idea of just having persistent identifiers for content. Objects and entities such as journal articles, book chapters, grants, preprints, data, software, statements, dissertations, protocols, affiliations, contributors, etc. should all be identified and that is still an important part of the picture. But what is most important is how they relate to each other and the context in which they make up the whole research ecosystem.
The foundation of the research nexus is metadata; the richer and more comprehensive the metadata in Crossref records, the more value there is for our members and for others, including for future generations.
Metadata and relationships between research objects and entities can support the whole scholarly research ecosystem in many ways, including:
Research integrity: helping to provide signals about the trustworthiness of the work including provenance information such as who funded it (when and for how much), which organizations and people contributed what, whether something was updated or corrected, and whether it was checked for originality. All of these signals can be expressed through Crossref metadata.
Reproducibility: helping others to reproduce outcomes by adding relationships between literature, data, software, protocols and methods, and more. All of these relationships can be asserted through members’ ongoing stewardship of their Crossref metadata records.
Reporting and assessment: helping organizations such as universities, funders, governments, to track and demonstrate the outcomes of investment; provide benchmarking information; show compliance with funder mandates; and decide what other research to fund. This kind of information can be included in Crossref metadata.
Discoverability: helping people and systems identify work through multiple angles. Registering content with Crossref makes it possible for work to be found and used. Thousands of systems use Crossref metadata, therefore the richer the records are, the more visibility there is likely to be of your work. Including metadata like abstracts and references are very simple ways to increase the visibility of your records.
The importance of relationships
A big part of the research nexus is establishing connections between and among different research objects which establishes provenance over time. Adding relationships to your metadata records can convey much richer and more nuanced connections beyond traditional references.
These relationships may consist of versions, corrections, translations, data, formats, supplements, and components. There are no extra fees for including relationships in your metadata.
What types of records can be registered with Crossref?
We are working to make our input schema more flexible so that almost any type of object can be registered and distributed openly through Crossref. At the moment, members tend to register the following:
Conference proceedings: information about a single conference and records for each conference paper/proceeding.
Datasets: includes database records or collections.
Dissertations: includes single dissertations and theses, but not collections.
Grants: includes both direct funding and other types of support such as the use of equipment and facilities.
Journals and articles: at the journal title and article level, and includes supplemental materials as components.
Peer reviews: any number of reviews, reports, or comments attached to any other work that has been registered with Crossref.
Pending publications: a temporary placeholder record with minimal metadata, often used for embargoed work where a DOI needs to be shared before the full content is made available online.
Preprints and posted content: includes preprints, eprints, working papers, reports, and other types of content that has been posted but not formally published.