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Digital Libraries. Hong (Iris) Xie. Different perspectives. Carrying out of the functions of libraries in a new way (library science)

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digital libraries

Digital Libraries

Hong (Iris) Xie

different perspectives
Different perspectives
  • Carrying out of the functions of libraries in a new way (library science)
  • Simply a distributed text-based information system, a collection of distributed information services, a distributed space of interlinked information or a networked multimedia information system (computer science)
  • Support for learning (education)
  • More of the same as WWW with improvements in performance, organization, functionality and usability (modern user)
what is a digital library
What is a digital library?
  • It is concerned with that body of knowledge relating to the collection, organization, storage, distribution, retrieval, and utilization of digital information. Digital libraries basically store materials in electronic format and manipulate large collections of those materials effectively
  • Bibliography on Digital Libraries http://sunsite.berkeley.edu/CurrentCites/bibondemand.cgi?query=digital+library
advantages of digital libraries
Advantages of Digital Libraries
  • dramatically advance the means to collect, store, organize and use
  • widely distribute knowledge resources containing diverse types of information and content stored in a variety of electronic forms
  • strengthen communication and collaboration between and among the research, business, government, and educational communities
  • encourage considerable investment in research resources, computing and communications network
  • take an international leadership role in the generation and dissemination of knowledge
  • contribute to the lifelong learning opportunities
examples of digital libraries
Examples of Digital Libraries
  • American Memory from the Library of Congress

http://lcweb2.loc.gov/ammem/ammemhome.html

  • University of California at Berkeley

http://elib.cs.berkeley.edu/

  • Internet Public Library

http://www.ipl.org

  • New York Public Library

http://digital.nypl.org/

major components
Major Components
  • Content
  • Services
  • Technology
  • Socio-political culture
major process
Major process
  • Collection
  • Storage
  • Organization
  • Distribution
content collection
Content/Collection
  • Quality
  • Cost of acquisition/licensing
  • Costs of digitization and maintenance
    • File transfer
      • Speed
      • Mass storage
    • Digitalization
      • output
      • resolution
      • value and condition of the physical objects (e.g., brittle, rare manuscripts must be handled differently than technical reports)
      • speed (digitizing 100 images is quite a different task than digitizing a million images)
storage
Storage
  • file conversion
  • Compression
    • Lossy compression
    • Lossless compression
  • streaming technology versus discrete files
organization
Organization
  • Indexing
    • Text indexing
    • Image indexing
    • Multimedia indexing
    • Multiple language documents indexing
  • Metadata
    • refers to any data used to aid the identification, description and location of networked electronic resources

http://dublincore.org/documents/2003/02/04/dces/

distribution
Distribution
  • Media
    • Internet
    • Intranet
  • Organizational level
    • International
    • National
    • State
    • Individual organization
access
Access
  • Interface design
    • Human-computer interaction
    • usability
  • Information retrieval
    • Interactive information retrieval
    • Natural language retrieval
    • Non text retrieval
  • Reference service
services
Services
  • Types of patrons
  • Types of services
    • Search services
    • Reference services
    • Routing services
    • Instruction
technology requisites
Technology Requisites
  • Computer hardware
  • High-speed networking
  • Security
  • Interoperability
culture economic challenges
Culture & Economic Challenges
  • cultural standardization versus empowering individual expression
  • intellectual property rights
  • information security and authority
  • Costs
the role of information professionals
The role of information professionals
  • Service provider
  • System interface designer
  • Gatekeeper of the electronic age
  • Mediator between users and system designers