Linking The Role of the A

1
Linking - The Role of the AI Service

• Jeff Pache
• Electronic Products Manager
• INSPEC, IEE
• jpache_at_iee.org.uk

2
Digital Library Systems

• Not just systems integration with software
  modules glued together, but
• Information systems tied together with the
  invisible string of linking

3
Linking Requirements

• From - References
• To - Online Journals
• With - Unique Identifier
• How - Linking Technology

4
INSPEC Database size

• Over 6.5 Million Records
• 80 Countries of Publication
• Over 3,000 Journals and 3,000 Other Publications
• 330,000 Records p.a.
• Over 30 years of Electronic Data

April 2000
5
Source Documents
Journal 72.6
Other 2.1
Conference in Journal 8.5
Conference 16.8
6
History of Linking Technologies

• 1890s - Notebook pencil
• 1970s - Printout
• 1980s - Integrated Systems
• 1990s - Web-based Systems

7
History of Unique Identifiers

• 1970s - ISSN
• 1980s - CCCC (not implemented as article
  unique)
• - SICI (needed pages numbers)
• 1990s - SICI 2 (not always uniquely
  deterministic)
• - PII (has a 2 digit year field)
• - DOI

8
Evolution of Linking Systems

• 1980s - Integrated CD-ROM Systems
• e.g. UMIs BPO, IPO (now IEL)
• 1990s - Aggregators
• with and without separate AI Databases
• 1990s - AI Vendor Systems Linking to
• publisher full text systems
• aggregator full text systems

9
From INSPEC Database to Full Text
Vendors
Linking Services

• DataStar
• IoPP
• Ovid Technologies
• ScienceDirect
• SilverPlatter
• STN

• e-journals Links
• AxiomTM links
• WebLinks/Openlinks
• ScienceDirect Gateway
• SilverLinker
• STN FullText Solution

10
Scalability (for INSPEC Only)

• Journals from over 1,000 Publishers
• 12 Online Site Licence Vendors
• Implies over 12,000 Bilateral Agreements
• Citation Linking Publisher to Publisher
• Implies over 1,000,000 Bilateral Agreements

11
Linking - Where we are now

• Definition IJA - INSPEC Journal Articles, that
  is the journal articles currently going into the
  INSPEC Database
• 50 of IJAs are linked via one vendor or another
  to one full text system or another

12
Linking - What can CrossRef do?

• CrossRef members publish 65 of IJAs
• When fully implemented with existing members,
  total linking could be raised to 72 of IJAs.
• That is 58 of current INSPEC throughput

13
Role of A I Service

• How - Compatibility with Link Technology
• With - Include Unique Identifiers
• From - Encourage Vendors to Link
• To - Encourage Publishers to Allow Linking

14
INSPEC and DOI/CrossRef

• Fall 1998 - Announced New Field for DOI
• Jan 1999 - Capturing DOI for IEE Articles
• May 2000 - Joined CrossRef
• End 2000 - Capturing DOIs for Academic Press,
  ACS, AIP and IEE Articles
• Early 2001 - Plan to use CrossRef to Obtain DOIs

15
Barriers to Total Linkability

• Not all Journal Full Text on the Web
• Bilateral Vendor-Publisher Agreements not
  Scalable
• Not all AI and few Vendors use DOIs
• Not all Publishers are CrossRef Members
• Appropriate Copy Problem and Other Rights
  Management Issues
• Conferences and Other Material

16
Linking - The Role of the AI Service

• Jeff Pache
• Electronic Products Manager
• INSPEC, IEE
• jpache_at_iee.org.uk