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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

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

extended linking services sfx
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
extended linking services openurl

Extended-Linking Services: OpenURL

What is an OpenURL?

Why do we need OpenURL?

Who works on OpenURL?

An Existing Commercial Service

Standardization

what is an openurl
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
why do we need openurl
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.

why do we need openurl1
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
why do we need openurl2
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)
slide9

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.
who works on openurl
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

openurl major issues
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
slide12

OpenURL: Acceptance

  • Fast
  • Keeps growing
  • Wide range of information resources:
  • A&I databases
  • OPACs
  • E-journals
  • E-print archives (OAi)
  • Other local data repositories
slide13

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

slide14

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