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DOI & Crossref. Arnoud de Kemp Springer-Verlag dekemp@springer.de. www.crossref.org. Not-for-profit network founded early 2000 First full-scale implementation of DOI PILA: Publishers Independent Linking Association, Inc. 168 publishers/societies 60 libraries 29 intermediaries.
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DOI & Crossref Arnoud de Kemp Springer-Verlag dekemp@springer.de
www.crossref.org • Not-for-profit network founded early 2000 • First full-scale implementation of DOI • PILA: Publishers Independent Linking Association, Inc. • 168 publishers/societies • 60 libraries • 29 intermediaries
What CrossRef is not: • A product for sale • An article database • A direct-to-end-user service • A search interface • A broker of full-text content • A consortium of big commercial publishers • CrossRef: complete citation linking backbone for all scholarly literature online (new as well as old)
For Whom? • Any publisher of primary research material in digital form • Libraries for localized linking solutions, enriching online catalogues and databases with links to their own full-text holdings • Secondary publishers and journal hosting services • Technology companies
Key Benefits • No state links: a DOI link is a persistent link in citations and databases • A single agreement rather than numerous bilateral linking agreements • Newest literature: outbound links to the latest cited sources • Higher accessibility through inbound links • Central DOI Directory
How the System works (A) • Join as a member and receive a DOI prefix • Create your own DOI (using the prefix) and assign it the article`s metadata and URL • Submit the record in a strict XML-based DTD format to the CrossRef MDDB • CrossRef registers each article DOI and URL in a central directory, thus allowing for permanent inbound links
How the System works (B) • In a separate process, the publishers also submits the citations contained in each article to the Reference Resolver, the front-end component of the MDDB • The publisher, library, XYZ can add outbound links to any of the article´s citation • Special querying and look-up process
Why Libraries participate? • Library users want to navigate directly from citations or database records to journal articles • Library records do not contain article-level information or links • CrossRef is a key piece of the puzzle in localized linking solutions for digital collections • CrossRef does not compete with OpenURL, which is a syntax for transporting metadata within URLs • All CrossRef publishers are OpenURL compliant
Some numbers & Other Information • 1,2 million resolutions in April 2002 • Deposits for over 5 million articles • Backfile content is being added, e.g. APS goes back to 1893 • Solution for the „appropriate copy problem“ • Linking to non-journal content, beginning with conference proceedings and books
Some Cooperations • International DOI Foundation (IDF) • Corporation for National Research Initiatives (CNRS): Handle System • Ex Libris • OhioLINK • Los Alamos National Laboratory • Board of Directors representing many parties