Search (2 results, page 1 of 1)

  • × author_ss:"Khoo, C.S.G."
  • × theme_ss:"OPAC"
  1. Poo, D.C.C.; Khoo, C.S.G.: Online Catalog Subject Searching (2009) 0.00 
    0.0015690941 = product of:
  0.01882913 = sum of:
    0.01882913 = weight(_text_:internet in 3851) [ClassicSimilarity], result of:
      0.01882913 = score(doc=3851,freq=2.0), product of:
        0.09621047 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.032588977 = queryNorm
        0.1957077 = fieldWeight in 3851, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.046875 = fieldNorm(doc=3851)
  0.083333336 = coord(1/12)
    Abstract
    The Online Public Access Catalog (OPAC) is an information retrieval system characterized by short bibliographic records, mainly of books, journals, and audiovisual materials available in a particular library. This, coupled with a Boolean search interface and a heterogeneous user population with diverse needs, presents special problems for subject searching by end users. To perform effective subject searching in the OPAC system requires a wide range of knowledge and skills. Various approaches to improving the OPAC design for subject searching have been proposed and are reviewed in this entry. The trend toward Web-based OPAC interfaces and the developments in Internet and digital library technologies present fresh opportunities for enhancing the effectiveness of the OPAC system for subject searching.
  2. Khoo, C.S.G.; Wan, K.-W.: ¬A simple relevancy-ranking strategy for an interface to Boolean OPACs (2004) 0.00 
    6.439062E-4 = product of:
  0.007726874 = sum of:
    0.007726874 = product of:
      0.015453748 = sum of:
        0.015453748 = weight(_text_:22 in 2509) [ClassicSimilarity], result of:
          0.015453748 = score(doc=2509,freq=2.0), product of:
            0.11412105 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.032588977 = queryNorm
            0.1354154 = fieldWeight in 2509, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.02734375 = fieldNorm(doc=2509)
      0.5 = coord(1/2)
  0.083333336 = coord(1/12)
    Source
    Electronic library. 22(2004) no.2, S.112-120

Authors

Themes