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Extended-Linking Services: towards a Quality Web

Extended-Linking Services: towards a Quality Web. Eric F. Van de Velde California Institute of Technology evdv@library.caltech.edu Oren Beit-Arie Ex Libris (USA) Inc oren@exlibris-usa.com. Software: H. Van de Sompel (British Library) P. Hochstenbach (U. of Ghent)

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Extended-Linking Services: towards a Quality Web

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  1. Extended-Linking Services: towards a Quality Web Eric F. Van de Velde California Institute of Technology evdv@library.caltech.edu Oren Beit-Arie Ex Libris (USA) Inc oren@exlibris-usa.com

  2. Software: H. Van de Sompel (British Library) P. Hochstenbach (U. of Ghent) O. Beit-Arie (Ex Libris (USA), Inc.) CIT Implementation: B. Coles J. McDonald Demonstration Extended-Linking Services: SFX

  3. Extended-Linking Services: OpenURL What is an OpenURL? Why do we need OpenURL? Who works on OpenURL? An Existing Commercial Service Standardization

  4. What is an OpenURL? • Transportable Metadata Format • Transportable • Between information services • Metadata • Initial Focus: bibliographic • Down the road: any information society • Format • Embedded in HTTP GET or POST request

  5. Why do we need OpenURL? • Persistent Links • Embraces DOIs: • Provides alternate resolution of DOIs.† • Allows for other persistence mechanisms • For example, OpenURL resolver database may keep track of ownership and location at a coarse-grain (publisher/journal) level. †Open Linking in the Scholarly Information Environment Using the OpenURL Framework, Herbert Van de Sompel and Oren Beit-Arie, D-Lib Magazine, Vol. 1, Nr. 3, March 2001.

  6. Why do we need OpenURL? • Multiple Links per Object • With OpenURL input, resolver may produce a menu of services. • For example: • From journal-article citation to: • Full text • A&I service • Web search engine • From book citation to: • Book reviews • On-line bookstore

  7. Why do we need OpenURL? • Context-Sensitive Links • Resolver may know the user. • Resolver may process the OpenURL information in a manner appropriate to the user’s context. • For example: • From journal-article citation to: • Appropriate copy • Local document-delivery system • From book citation to: • Local holdings (OPAC)

  8. Why do we need OpenURL? • Log of User Actions • User jumps from one resource to another. • Resolver may keep track of user actions. • At end of session, resolver may produce a log according to user specifications.

  9. Who works on OpenURL? • NISO Committee AX • First meeting was June 28th and 29th. • Subscribe to the OpenURL listserv at: http://library.caltech.edu/OpenURL

  10. OpenURL: Major Issues • Scholarly Information Society, extensible • Structure: • Referent (item, subject, article) • Referrer (web-service) • Resolver (service component – link server) • Requester (user) • Service-Type (type of resolution) • Referring-Entity (citing article) • By Value and/or By Reference • Encoding, Terminology, Versioning

  11. OpenURL: Acceptance • Fast • Keeps growing • Wide range of information resources: • A&I databases • OPACs • E-journals • E-print archives (OAi) • Other local data repositories

  12. OpenURL: Acceptance (information and service providers) • EBSCO PublishingEBSCOhost • The Gale Group • Institute of Physics PublishingAxiomElectronic Journals • ISIWeb of Science • Swets BlackwellSwetsNetNavigator • SilverPlatterERL • Ex Libris • ALEPH Digitool • MetaLib http://www.sfxit.com/sources.html

  13. OpenURL: Acceptance (libraries with SFX) • Ghent University • Los Alamos • Caltech • IUPUI • Washington State University • University of Nevada, Reno • University of Chicago • CDL • UTS, Sydney • University of Rochester • London Business School • UC Davis • UC Santa Barbara • Boston College • Brown University • Yale • University of Westminster, UK • MIT • University of Iowa • Oak Ridge Laboratory • Delft University of Technology, Holland • New York University • Czech National Library • Teacher’s College, Taipei • …

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