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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Andrew Gilmartin

Andrew has moved on from Crossref. Andrew Gilmartin was part of the US team responsible for implementing and overseeing the query and deposit systems. As a senior member of the technical staff, he helped plan the design and implementation of Crossref’s ever-evolving and growing services.

DOIs and matching regular expressions

Andrew Gilmartin

Andrew Gilmartin – 2015 August 11

In IdentifiersProgramming

We regularly see developers using regular expressions to validate or scrape for DOIs. For modern Crossref DOIs the regular expression is short

/^10.\d{4,9}/[-._;()/:A-Z0-9]+$/i

For the 74.9M DOIs we have seen this matches 74.4M of them. If you need to use only one pattern then use this one.

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Research Integrity Roundtable 2024

2024 November 15

How good is your matching?

2024 November 06

Update on the Resourcing Crossref for Future Sustainability research

2024 October 28

Meet the candidates and vote in our 2024 Board elections

2024 September 24

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