Search and Retrieval Resource Discovery

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Search and Retrieval (Resource Discovery)

• T.B. Rajashekar
• (From ICADL2001 Tutorial)

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Resource Discovery Issues
How do we let users know what sources can be
accessed?How do they access these?
(Interface)How do we support personalization?How
do we provide single point access to digital
material? What inventory and finding aids are
relevant?
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Resource Discovery Strategies

• Structured search (metadata-driven)
• Object search (full-text, multi-media object
  search)
• Search at finer granularity (tables, figures,
  paragraphs, section headings)
• Global search and resource type search (e.g. bib
  db, e-journals, reports, experts)
• Structured presentation (display)

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Resource Discovery Strategies

• Hierarchical browsing (subject schemes/ topic
  directory)
• Relevance ranking, QBE, hit/link based ranking
• Related sources found useful by others (e.g.
  Amazon.com)

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Browse by Subject in OAI
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Browse by Subject in OAI
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Resource Discovery Strategies

• User rating and comments on accessed resources
  (e.g. Amazon.com)
• User interface Design for productivity,
  efficiency and memorability
• Intranet users are repeat users and use DIS as a
  productivity tool
• Search refinement, search history, search set
  combination

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Resource Discovery Strategies

• Personalization
• Most users use only a small number of resources
• Allow them to set up a profile of preferred
  sources (and modify the profile when needed)
• These become the default menu picks when they
  visit next time
• User profiles can also be used for push based
  delivery of content
• Support for monitoring of content changes in
  remote sites (e.g. Netmind)

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An example Push service
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An example Push service (profile set up)
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An example Push service (modification)