Search (1 results, page 1 of 1)

0.008975883 = product of:
  0.071807064 = sum of:
    0.071807064 = weight(_text_:case in 2124) [ClassicSimilarity], result of:
      0.071807064 = score(doc=2124,freq=4.0), product of:
        0.1742197 = queryWeight, product of:
          4.3964143 = idf(docFreq=1480, maxDocs=44218)
          0.03962768 = queryNorm
        0.41216385 = fieldWeight in 2124, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.3964143 = idf(docFreq=1480, maxDocs=44218)
          0.046875 = fieldNorm(doc=2124)
  0.125 = coord(1/8)

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® search engine. This feature leverages content-similarity links that tie MEDLINE® 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.