Latest blog posts
Martyn Rittman
2024 November 15

Research Integrity Roundtable 2024

For the third year in a row, Crossref hosted a roundtable on research integrity prior to the Frankfurt book fair. This year the event looked at Crossmark, our tool to display retractions and other post-publication updates to readers. Since the start of 2024, we have been carrying out a consultation on Crossmark, gathering feedback and input from a range of members. The roundtable discussion was a chance to check and refine some of the conclusions we’ve come to, and gather more suggestions on the way forward.

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Dominika Tkaczyk
2024 November 06

How good is your matching?

In our previous blog post in this series, we explained why no metadata matching strategy can return perfect results. Thankfully, however, this does not mean that it’s impossible to know anything about the quality of matching. Indeed, we can (and should!) measure how close (or far) we are from achieving perfection with our matching. Read on to learn how this can be done! How about we start with a quiz? Imagine a database of scholarly metadata that needs to be enriched with identifiers, such as ORCIDs or ROR IDs.

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Kornelia Korzec
2024 October 28

Update on the Resourcing Crossref for Future Sustainability research

We’re in year two of the Resourcing Crossref for Future Sustainability (RCFS) research. This report provides an update on progress to date, specifically on research we’ve conducted to better understand the impact of our fees and possible changes. Crossref is in a good financial position with our current fees, which haven’t increased in 20 years. This project is seeking to future-proof our fees by: Making fees more equitable Simplifying our complex fee schedule Rebalancing revenue sources In order to review all aspects of our fees, we’ve planned five projects to look into specific aspects of our current fees that may need to change to achieve the goals above.

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Lucy Ofiesh
2024 September 24

Meet the candidates and vote in our 2024 Board elections

On behalf of the Nominating Committee, I’m pleased to share the slate of candidates for the 2024 board election. Each year we do an open call for board interest. This year, the Nominating Committee received 53 submissions from members worldwide to fill four open board seats. We maintain a balanced board of 8 large member seats and 8 small member seats. Size is determined based on the organization’s membership tier (small members fall in the $0-$1,650 tiers and large members in the $3,900 - $50,000 tiers).

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Documentation

XSD schema quick reference

We support additional schema (not listed here) for legacy purposes.

Deposit schema

Used for registering and updating DOI metadata records:

SchemaPurposeStatusFurther info
grant_id0.1.1.xsdgrant metadatarecommendeddocumentation
crossref5.3.1.xsdfull metadata depositsrecommendeddocumentation
crossref4.8.1.xsdfull metadata depositsrecommendeddocumentation
crossref4.4.2.xsdfull metadata depositsavailabledocumentation
AccessIndicators.xsdlicense dataimported
relations.xsdrelationships between DOIs and other identifiersimported
clinicaltrials.xsdrelationships between publications that report on a clinical trialimported
doi_resources4.4.2.xsdused to append or update specific sets of metadata to an existing recordrecommendeddocumentation

Query schema

Used for formatting XML queries:

SchemaPurposeFurther info
Crossref_query_input2.0.xsdused to input XML queries to the systemdocumentation

Metadata retrieval schema

Used for retrieving our metadata:

SchemaPurposeFurther info
crossref_query_output2.0.xsdreturns query results in xsd_xml format, used for Cited-by resultsdocumentation
crossref_query_output3.0.xsdreturns query results in UNIXSD formatdocumentation
unixref1.1.xsdreturns query results in the UNIXML format, also used to support the data delivered by our OAI-PMH servicedocumentation
unixref1.0.xsdreturns query results in the UNIXML format for some older content, also used to support the data delivered by our OAI-PMH servicedocumentation
crossref_output3.0.1.xsdused to support data files generated for bulk data distributiondocumentation
OAI-PMH.cr.xsdaccommodates differences between Crossref’s OAI-PMH implementation and the published Open Archives OAI 2.0 schemadocumentation

Page owner: Patricia Feeney   |   Last updated 2021-October-05