Search (8 results, page 1 of 1)

0.052343078 = product of:
  0.104686156 = sum of:
    0.104686156 = product of:
      0.20937231 = sum of:
        0.20937231 = weight(_text_:plus in 6932) [ClassicSimilarity], result of:
          0.20937231 = score(doc=6932,freq=4.0), product of:
            0.3101809 = queryWeight, product of:
              6.1714344 = idf(docFreq=250, maxDocs=44218)
              0.05026075 = queryNorm
            0.67500067 = fieldWeight in 6932, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              6.1714344 = idf(docFreq=250, maxDocs=44218)
              0.0546875 = fieldNorm(doc=6932)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract

This experiment explores the effectiveness of retrieving the listing of a known-item book from the 3.6 million entry onine catalog at the library of the University of Michigan using various combinations of author's name plus first and last title words. The principal finding was that 98.9% of the time a 1 to 20 line miniature catalog (minicat) was displayed that contained either the entry sought or a not-in-database (NID) reply when the search comprised all three words.

0.04229959 = product of:
  0.08459918 = sum of:
    0.08459918 = product of:
      0.16919836 = sum of:
        0.16919836 = weight(_text_:plus in 3826) [ClassicSimilarity], result of:
          0.16919836 = score(doc=3826,freq=2.0), product of:
            0.3101809 = queryWeight, product of:
              6.1714344 = idf(docFreq=250, maxDocs=44218)
              0.05026075 = queryNorm
            0.5454829 = fieldWeight in 3826, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.1714344 = idf(docFreq=250, maxDocs=44218)
              0.0625 = fieldNorm(doc=3826)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract

Reports the findings of an experiment simulating use of a university OPAC by academic library users. Examines how effective are online searches by university library users employing surname plus first title word, or last title word, or first and last title words in producing miniature catalogues of i screen. The searches were known item searches for books

0.037012145 = product of:
  0.07402429 = sum of:
    0.07402429 = product of:
      0.14804858 = sum of:
        0.14804858 = weight(_text_:plus in 637) [ClassicSimilarity], result of:
          0.14804858 = score(doc=637,freq=2.0), product of:
            0.3101809 = queryWeight, product of:
              6.1714344 = idf(docFreq=250, maxDocs=44218)
              0.05026075 = queryNorm
            0.4772975 = fieldWeight in 637, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.1714344 = idf(docFreq=250, maxDocs=44218)
              0.0546875 = fieldNorm(doc=637)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract

This article reprots the findings of an experiment employing a simulated scholarly use of an OPAC to determine the frequency of one-screen displays when a scholar searches for a known-item with so-called 'keywords' in an implied boolean system. The experiment revealed that a 'keyword' search formula comprising surname plus first and last title words produced a single screen 92.8% of the time, thereby reducing the failure of traditional title searching to produce single screens by nearly one half; such a formula also enables a scholar to search successfully with abbreviated, unsearchable bibliographic citations. Additional research should be carried out, for if it is further demonstrated that replacing traditional bibliographic catalog entries with transcribed title pages provides an improved known-item OPAC, users would benefit and libraries would enjoy huge savings

0.013619275 = product of:
  0.02723855 = sum of:
    0.02723855 = product of:
      0.0544771 = sum of:
        0.0544771 = weight(_text_:22 in 1628) [ClassicSimilarity], result of:
          0.0544771 = score(doc=1628,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = queryNorm
            0.30952093 = fieldWeight in 1628, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=1628)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

29. 7.1998 10:57:22

0.013619275 = product of:
  0.02723855 = sum of:
    0.02723855 = product of:
      0.0544771 = sum of:
        0.0544771 = weight(_text_:22 in 2905) [ClassicSimilarity], result of:
          0.0544771 = score(doc=2905,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = queryNorm
            0.30952093 = fieldWeight in 2905, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=2905)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

22. 2.2009 18:50:43

0.011916866 = product of:
  0.023833731 = sum of:
    0.023833731 = product of:
      0.047667462 = sum of:
        0.047667462 = weight(_text_:22 in 760) [ClassicSimilarity], result of:
          0.047667462 = score(doc=760,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = queryNorm
            0.2708308 = fieldWeight in 760, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=760)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract

The degree of variability in the percentage of subject searching in an online public access catalog (OPAC) among branch libraries of one university was studied. A full semester's worth of transactions was analyzed, not sampled. The time units used were hour of the day, day of the week, and week of the semester. The findings show that subject searching varies from a low of 22% to a high of 74% over the hours of a day. Variability for the days of the week ranged from 17% to 64%, and for the weeks of the semester variability ranged from 12% to 70%. Valuable management information on the utilization of the OPAC within each brach library and among all the branch libraries is provided through numerous charts and graphs.

0.011916866 = product of:
  0.023833731 = sum of:
    0.023833731 = product of:
      0.047667462 = sum of:
        0.047667462 = weight(_text_:22 in 7914) [ClassicSimilarity], result of:
          0.047667462 = score(doc=7914,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = queryNorm
            0.2708308 = fieldWeight in 7914, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=7914)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source

International cataloguing and bibliographic control. 22(1993) no.4, S.68-71

0.011916866 = product of:
  0.023833731 = sum of:
    0.023833731 = product of:
      0.047667462 = sum of:
        0.047667462 = weight(_text_:22 in 3599) [ClassicSimilarity], result of:
          0.047667462 = score(doc=3599,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = queryNorm
            0.2708308 = fieldWeight in 3599, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3599)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

10. 9.2000 17:38:22