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Metasearch

Explore the evolution of Metasearch with insights from the NISO Metasearch Initiative. Learn about search and retrieval practices, standards, and efficiency considerations in accessing diverse information resources.

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Metasearch

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  1. Metasearch Jenny Walker Co-chair NISO Metasearch Initiative Jenny@exlibris-usa.com

  2. Diverse information resources Query form ? April 16th 2004 metasearch = integrated searching cross database searching = parallel searching = broadcast searching = federated searching = … CNI Spring Forum

  3. Query form ? Metasearch transformations Diverse information resources CNI Spring Forum April 16th 2004

  4. WAU=Kryger, Meir AND WTI=sleep (%20sleep[TITL]%20)%20AND%20(%20Kryger[AUTH]%20Meir[AUTH]%20) 1=Kryger, Meir AND 4=sleep 1003=Kryger-M? AND 4=sleep WAU=Kryger, Meir AND WTI=sleep Z39.50 Z39.50 HTTP HTTP Z39.50 Z39.50 Z39.50 Z39.50 Z39.50 Z39.50 HTTP HTTP ALEPH ALEPH ALEPH ALEPH MEDLINE MEDLINE Library of Congress Library of Congress Library of Congress Library of Congress MEDLINE MEDLINE PubMed PubMed PubMed PubMed KOBV Boston College KOBV Boston College Kryger, Meir Author: Title: sleep CNI Spring Forum April 16th 2004

  5. Why Metasearch? • Only librarians like to search, everyone else likes to find. • All things being equal, one place to search is better than more. • "Good enough" is the sum of gain minus pain; users aren't lazy, they are human • The size of a result set isn't as important as how it is presented ( the Google lesson) Roy Tennant, CDL. January 2004 CNI Spring Forum

  6. Many homegrown and commercial products now available for Metasearch • Library of Congress portals page: http://www.loc.gov/catdir/lcpaig/paig.html CNI Spring Forum

  7. Metasearch and Standards • Most prominent standard deployed is Z39.50 • Standards are required beyond Search and Retrieve • Concern from Information Providers re inefficient use of resources with Metasearch lead to NISO Metasearch Inititiave CNI Spring Forum

  8. NISO Metasearch Initiative 3 Task Groups • Access Management • Collection Description • Search and Retrieve See http://www.niso.org/metasearch CNI Spring Forum

  9. TG3: Search and Retrieve • A description of the current practice in Metasearch search and retrieval • Inventorying proprietary XML interfaces and best practices for Metasearch search and retrieval • Defining a standard vocabulary and terms • Defining a template for exchange of search and retrieval functionality • Recommend the data elements to describe a Result Set and a record within a Result Set • Review SRW/SRU and recommend modifications for use as the basis of a Metasearch search and retrieval standard. CNI Spring Forum

  10. Search/Retrieve Requirements • Near stateless access • Lightweight identification, authentication and authorization eg a token • Search in a Standard Query syntax • Allow several resources to be searched by one request CNI Spring Forum

  11. Possible options: • Z39.50 • Proprietary APIs • Screen scraping • SRU/SRW CNI Spring Forum

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