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Linking & CrossRef

Linking & CrossRef. Harry E. Samuels Digital Library Projects Coordinator Endeavor Information Systems Inc. 1. Linking & CrossRef. What Do We Mean By Linking? We mean linking to full-text We mean linking to extended services Why Is Linking Important?

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Linking & CrossRef

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  1. Linking & CrossRef Harry E. Samuels Digital Library Projects Coordinator Endeavor Information Systems Inc. 1

  2. Linking & CrossRef What Do We Mean By Linking? • We mean linking to full-text • We mean linking to extended services Why Is Linking Important? • Because it makes the research process faster and more efficient

  3. Linking & CrossRef What Does A Linking System Do? • It accepts metadata from a Source • Based on the metadata and information in its database, it determines what links should be presented to the user, and it then builds and presents those links. • Because the library has control over the contents of the database, the linking system should only present links that are relevant and accessible to the user.

  4. Source Database Target Database Linking System Metadata Link-To URL

  5. Linking & CrossRef What Is OpenURL? • A syntax for transporting metadata via http • It looks like this: http://lfp.endinfosys.com?issn=5555-6666&date=2001&volume=1&issue=2&spage=99 What Is A Link-To URL? • Whatever syntax a target database uses • It may look like this:http://www.automag.com/AAOWMagazine/2001_aprilmay/pg18.asp

  6. Source Database Target Database Linking System OpenURL Link-To URL

  7. Linking & CrossRef What Is In A Source Database? • It could be an abstracting or indexing database like ProQuest or Web of Science or Silver Platter What Is In A Target Database? • Full text as in Science Direct or Academic Press or American Mathematical Society • Extended Services like: • Document Delivery sites • General interest web sites • Any service for which the system can build a URL

  8. Target Database X Source Database X Link-To URL OpenURL Source Database Y Target Database Y Linking System OpenURL Link-To URL Source Database Z OpenURL Target Database Z Link-To URL

  9. Linking & CrossRef What Is the DOI Handle System? • Managed by International DOI Foundation (IDF) • Uses Handle Technology from Corporation for National Research Initiatives (CNRI)

  10. Source Database Target Database DOI Handle System DOI Link-To URL http://dx.doi.org/10.1000/123456

  11. Linking & CrossRef What Is CrossRef? • Co-operative effort between 70 learned publishers • Non-profit trade association • Enables identifier-based linking using DOIs • Registers DOIs and URLs for member publishers • Provides metadata lookup service to enable link resolution • Funded by look-up and deposit fees

  12. CrossRef Collection Service Publisher DOIs URLs Article Metadata DOIs URLs Article Metadata DOIs DOI Handle System CrossRef Database

  13. CrossRef Query Service Publisher Article Metadata DOIs CrossRef Database

  14. Linking & CrossRef What Is The Appropriate Copy Problem? • The DOI Handle System has several inherent problems • It does not know if the user’s library has a linking server and does not know the information in the linking server’s database. • It only registers URLs for rights holders (publishers) and knows nothing about aggregator sites or local copy (electronic or hardcopy).

  15. Linking & CrossRef Appropriate Copy Prototype • A prototype group led by Dale Flecker of Harvard that is testing an architecture that will put a library’s linking server back in the loop.

  16. Aggregator Database Publisher Database Link-To URL Linking Server CrossRef Source Database DOI Handle System DOI Link-To URL Link-To URL DOI in OpenURL DOI DOI in OpenURL Local Copy Metadata Link-To URL

  17. Endeavor Linking Products • LinkFinder • Packaged with Citation Server • Accepts metadata passed to it from Citation Server interface and provides links to full-text (one-way linking) • Extended service links will also be added • Scheduled release is Summer 2001

  18. Endeavor Linking Products • LinkFinderPlus • Packaged with ENCompass AND sold as stand-alone product • Accepts OpenURL from any interface including ENCompass • Builds link-to URLs • Will be able to serve as local resolver for appropriate copy resolution • Scheduled release is End-Of-Year 2001 (as stand-alone and packaged with ENCompass)

  19. Important URLs • NISO Committee AX on OpenURL http://library.caltech.edu/openurl • CrossRef http://www.crossref.org • The Digital Object Identifier System http://www.doi.org/

  20. Endeavor’s ENCompass

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