Navigating information spaces: A case study of related article search in PubMed

  • Authors:
  • Jimmy Lin;Michael DiCuccio;Vahan Grigoryan;W. John Wilbur

  • Affiliations:
  • The iSchool, University of Maryland, College Park, MD, USA and National Center for Biotechnology Information National Library of Medicine Bethesda, MD, USA;National Center for Biotechnology Information National Library of Medicine Bethesda, MD, USA;National Center for Biotechnology Information National Library of Medicine Bethesda, MD, USA;National Center for Biotechnology Information National Library of Medicine Bethesda, MD, USA

  • Venue:
  • Information Processing and Management: an International Journal
  • Year:
  • 2008

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Abstract

The concept of an ''information space'' provides a powerful metaphor for guiding the design of interactive retrieval systems. We present a case study of related article search, a browsing tool designed to help users navigate the information space defined by results of the PubMed^(R) search engine. This feature leverages content-similarity links that tie MEDLINE^(R) citations together in a vast document network. We examine the effectiveness of related article search from two perspectives: a topological analysis of networks generated from information needs represented in the TREC 2005 genomics track and a query log analysis of real PubMed users. Together, data suggest that related article search is a useful feature and that browsing related articles has become an integral part of how users interact with PubMed.