Document (#38803)

Author
Casson, E.
Fabbrizzi, A.
Slavic, A.
Title
Subject search in Italian OPACs : an opportunity in waiting?
Source
Subject access: preparing for the future. Conference on August 20 - 21, 2009 in Florence, the IFLA Classification and Indexing Section sponsored an IFLA satellite conference entitled "Looking at the Past and Preparing for the Future". Eds.: P. Landry et al
Imprint
Berlin : DeGruyter Saur
Year
2011
Pages
S.37-50
Series
IFLA series on bibliographic control; vol. 42
Abstract
Subject access to bibliographic data supported by knowledge organization systems, such as subject headings and classification, plays an important role in ensuring the quality of library catalogues. It is generally acknowledged that users have a strong affinity to subject browsing and searching and are inclined tofollow meaningful links between resources. Research studies, however, show that library OPACs are not designed to support or make good use of subject indexes and their underlying semantic structure. A project entitled OPAC semantici was initiated in 2003 by a number of Italian subject specialists and the Italian "Research Group on Subject Indexing" (GRIS) with a goal to analyse and evaluate subject access in Italian library catalogues through a survey of 150 OPACs. Applying the same methodology, a follow-up survey to assess whether any improvement had taken place was conducted five years later, in spring 2008. Analysis of these two surveys indicated that there was a slight improvement. The authors discuss the results of these two surveys, analyse the problems in subject searching in OPACs and explain the recommendations for subject searching enhancement put forward by GRIS. Using the example of Italian OPACs, the authors will attempt to outline some requirements for a subject searching interface and explain how this can be achieved through authority control.
Content
Vgl. auch: http://www.ifla2009satelliteflorence.it/meeting2/program/assets/CassonFabrizziSlavic.pdf.
Theme
OPAC
Location
I

Similar documents (author)

  1. Slavic, A.: UDC implementation : from library shelves to a structured indexing language (2003) 5.23
    5.2294087 = sum of:
      5.2294087 = weight(author_txt:slavic in 2935) [ClassicSimilarity], result of:
        5.2294087 = fieldWeight in 2935, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.367054 = idf(docFreq=26, maxDocs=42740)
          0.625 = fieldNorm(doc=2935)
    
  2. Slavic, A.: Interface to classification : some objectives and options (2006) 5.23
    5.2294087 = sum of:
      5.2294087 = weight(author_txt:slavic in 3132) [ClassicSimilarity], result of:
        5.2294087 = fieldWeight in 3132, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.367054 = idf(docFreq=26, maxDocs=42740)
          0.625 = fieldNorm(doc=3132)
    
  3. Slavic, A.: AHDS gets to grips with FAT (2002) 5.23
    5.2294087 = sum of:
      5.2294087 = weight(author_txt:slavic in 3528) [ClassicSimilarity], result of:
        5.2294087 = fieldWeight in 3528, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.367054 = idf(docFreq=26, maxDocs=42740)
          0.625 = fieldNorm(doc=3528)
    
  4. Slavic, A.: UDC translations : a 2004 survey report and bibliography (2004) 5.23
    5.2294087 = sum of:
      5.2294087 = weight(author_txt:slavic in 4745) [ClassicSimilarity], result of:
        5.2294087 = fieldWeight in 4745, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.367054 = idf(docFreq=26, maxDocs=42740)
          0.625 = fieldNorm(doc=4745)
    
  5. Slavic, A.: UDC implementation : from library shelves to a structured indexing language (2003) 5.23
    5.2294087 = sum of:
      5.2294087 = weight(author_txt:slavic in 4790) [ClassicSimilarity], result of:
        5.2294087 = fieldWeight in 4790, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.367054 = idf(docFreq=26, maxDocs=42740)
          0.625 = fieldNorm(doc=4790)
    

Similar documents (content)

  1. Wood, A.J.: OPACs in public libraries : a second look (1989) 0.26
    0.2580189 = sum of:
      0.2580189 = product of:
        0.8063091 = sum of:
          0.012943996 = weight(abstract_txt:that in 2587) [ClassicSimilarity], result of:
            0.012943996 = score(doc=2587,freq=2.0), product of:
              0.034945536 = queryWeight, product of:
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.014593119 = queryNorm
              0.37040484 = fieldWeight in 2587, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.109375 = fieldNorm(doc=2587)
          0.021635052 = weight(abstract_txt:access in 2587) [ClassicSimilarity], result of:
            0.021635052 = score(doc=2587,freq=1.0), product of:
              0.054170687 = queryWeight, product of:
                1.016578 = boost
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.014593119 = queryNorm
              0.3993867 = fieldWeight in 2587, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.109375 = fieldNorm(doc=2587)
          0.021498635 = weight(abstract_txt:library in 2587) [ClassicSimilarity], result of:
            0.021498635 = score(doc=2587,freq=1.0), product of:
              0.06174902 = queryWeight, product of:
                1.3292882 = boost
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.014593119 = queryNorm
              0.34816158 = fieldWeight in 2587, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.109375 = fieldNorm(doc=2587)
          0.07848027 = weight(abstract_txt:survey in 2587) [ClassicSimilarity], result of:
            0.07848027 = score(doc=2587,freq=2.0), product of:
              0.10150546 = queryWeight, product of:
                1.3915641 = boost
                4.9984813 = idf(docFreq=783, maxDocs=42740)
                0.014593119 = queryNorm
              0.7731631 = fieldWeight in 2587, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.9984813 = idf(docFreq=783, maxDocs=42740)
                0.109375 = fieldNorm(doc=2587)
          0.06921962 = weight(abstract_txt:catalogues in 2587) [ClassicSimilarity], result of:
            0.06921962 = score(doc=2587,freq=1.0), product of:
              0.117619276 = queryWeight, product of:
                1.4979515 = boost
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.014593119 = queryNorm
              0.58850574 = fieldWeight in 2587, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.109375 = fieldNorm(doc=2587)
          0.06908255 = weight(abstract_txt:searching in 2587) [ClassicSimilarity], result of:
            0.06908255 = score(doc=2587,freq=1.0), product of:
              0.14799531 = queryWeight, product of:
                2.3762794 = boost
                4.267783 = idf(docFreq=1627, maxDocs=42740)
                0.014593119 = queryNorm
              0.46678877 = fieldWeight in 2587, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.267783 = idf(docFreq=1627, maxDocs=42740)
                0.109375 = fieldNorm(doc=2587)
          0.38734362 = weight(abstract_txt:opacs in 2587) [ClassicSimilarity], result of:
            0.38734362 = score(doc=2587,freq=3.0), product of:
              0.3488694 = queryWeight, product of:
                4.0790586 = boost
                5.860772 = idf(docFreq=330, maxDocs=42740)
                0.014593119 = queryNorm
              1.1102825 = fieldWeight in 2587, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.860772 = idf(docFreq=330, maxDocs=42740)
                0.109375 = fieldNorm(doc=2587)
          0.14610538 = weight(abstract_txt:subject in 2587) [ClassicSimilarity], result of:
            0.14610538 = score(doc=2587,freq=1.0), product of:
              0.3416311 = queryWeight, product of:
                5.9871283 = boost
                3.9101257 = idf(docFreq=2327, maxDocs=42740)
                0.014593119 = queryNorm
              0.42767 = fieldWeight in 2587, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9101257 = idf(docFreq=2327, maxDocs=42740)
                0.109375 = fieldNorm(doc=2587)
        0.32 = coord(8/25)
    
  2. Riesthuis, G.J.A.; Zumer, M.: FRBR and FRANAR : subject access (2004) 0.20
    0.19589864 = sum of:
      0.19589864 = product of:
        0.699638 = sum of:
          0.013588365 = weight(abstract_txt:that in 3647) [ClassicSimilarity], result of:
            0.013588365 = score(doc=3647,freq=3.0), product of:
              0.034945536 = queryWeight, product of:
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.014593119 = queryNorm
              0.38884407 = fieldWeight in 3647, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.09375 = fieldNorm(doc=3647)
          0.018544331 = weight(abstract_txt:access in 3647) [ClassicSimilarity], result of:
            0.018544331 = score(doc=3647,freq=1.0), product of:
              0.054170687 = queryWeight, product of:
                1.016578 = boost
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.014593119 = queryNorm
              0.34233147 = fieldWeight in 3647, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.09375 = fieldNorm(doc=3647)
          0.07717681 = weight(abstract_txt:initiated in 3647) [ClassicSimilarity], result of:
            0.07717681 = score(doc=3647,freq=1.0), product of:
              0.11124268 = queryWeight, product of:
                1.0300996 = boost
                7.400211 = idf(docFreq=70, maxDocs=42740)
                0.014593119 = queryNorm
              0.69376975 = fieldWeight in 3647, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.400211 = idf(docFreq=70, maxDocs=42740)
                0.09375 = fieldNorm(doc=3647)
          0.018427402 = weight(abstract_txt:library in 3647) [ClassicSimilarity], result of:
            0.018427402 = score(doc=3647,freq=1.0), product of:
              0.06174902 = queryWeight, product of:
                1.3292882 = boost
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.014593119 = queryNorm
              0.2984242 = fieldWeight in 3647, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.09375 = fieldNorm(doc=3647)
          0.083906844 = weight(abstract_txt:catalogues in 3647) [ClassicSimilarity], result of:
            0.083906844 = score(doc=3647,freq=2.0), product of:
              0.117619276 = queryWeight, product of:
                1.4979515 = boost
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.014593119 = queryNorm
              0.71337664 = fieldWeight in 3647, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.09375 = fieldNorm(doc=3647)
          0.27108407 = weight(abstract_txt:opacs in 3647) [ClassicSimilarity], result of:
            0.27108407 = score(doc=3647,freq=2.0), product of:
              0.3488694 = queryWeight, product of:
                4.0790586 = boost
                5.860772 = idf(docFreq=330, maxDocs=42740)
                0.014593119 = queryNorm
              0.77703595 = fieldWeight in 3647, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.860772 = idf(docFreq=330, maxDocs=42740)
                0.09375 = fieldNorm(doc=3647)
          0.21691021 = weight(abstract_txt:subject in 3647) [ClassicSimilarity], result of:
            0.21691021 = score(doc=3647,freq=3.0), product of:
              0.3416311 = queryWeight, product of:
                5.9871283 = boost
                3.9101257 = idf(docFreq=2327, maxDocs=42740)
                0.014593119 = queryNorm
              0.63492525 = fieldWeight in 3647, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.9101257 = idf(docFreq=2327, maxDocs=42740)
                0.09375 = fieldNorm(doc=3647)
        0.28 = coord(7/25)
    
  3. Crawford, J.C.; Thom, L.C.; Powles, J.A.: ¬A survey of subject access to academic library catalogues in Great Britain (1993) 0.19
    0.19254829 = sum of:
      0.19254829 = product of:
        0.6017134 = sum of:
          0.005230164 = weight(abstract_txt:that in 274) [ClassicSimilarity], result of:
            0.005230164 = score(doc=274,freq=1.0), product of:
              0.034945536 = queryWeight, product of:
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.014593119 = queryNorm
              0.14966616 = fieldWeight in 274, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.0625 = fieldNorm(doc=274)
          0.021413147 = weight(abstract_txt:access in 274) [ClassicSimilarity], result of:
            0.021413147 = score(doc=274,freq=3.0), product of:
              0.054170687 = queryWeight, product of:
                1.016578 = boost
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.014593119 = queryNorm
              0.39529032 = fieldWeight in 274, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.0625 = fieldNorm(doc=274)
          0.0122849345 = weight(abstract_txt:library in 274) [ClassicSimilarity], result of:
            0.0122849345 = score(doc=274,freq=1.0), product of:
              0.06174902 = queryWeight, product of:
                1.3292882 = boost
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.014593119 = queryNorm
              0.19894947 = fieldWeight in 274, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.1831915 = idf(docFreq=4815, maxDocs=42740)
                0.0625 = fieldNorm(doc=274)
          0.04484587 = weight(abstract_txt:survey in 274) [ClassicSimilarity], result of:
            0.04484587 = score(doc=274,freq=2.0), product of:
              0.10150546 = queryWeight, product of:
                1.3915641 = boost
                4.9984813 = idf(docFreq=783, maxDocs=42740)
                0.014593119 = queryNorm
              0.44180748 = fieldWeight in 274, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.9984813 = idf(docFreq=783, maxDocs=42740)
                0.0625 = fieldNorm(doc=274)
          0.039554067 = weight(abstract_txt:catalogues in 274) [ClassicSimilarity], result of:
            0.039554067 = score(doc=274,freq=1.0), product of:
              0.117619276 = queryWeight, product of:
                1.4979515 = boost
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.014593119 = queryNorm
              0.336289 = fieldWeight in 274, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.380624 = idf(docFreq=534, maxDocs=42740)
                0.0625 = fieldNorm(doc=274)
          0.05582713 = weight(abstract_txt:searching in 274) [ClassicSimilarity], result of:
            0.05582713 = score(doc=274,freq=2.0), product of:
              0.14799531 = queryWeight, product of:
                2.3762794 = boost
                4.267783 = idf(docFreq=1627, maxDocs=42740)
                0.014593119 = queryNorm
              0.3772223 = fieldWeight in 274, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.267783 = idf(docFreq=1627, maxDocs=42740)
                0.0625 = fieldNorm(doc=274)
          0.2555805 = weight(abstract_txt:opacs in 274) [ClassicSimilarity], result of:
            0.2555805 = score(doc=274,freq=4.0), product of:
              0.3488694 = queryWeight, product of:
                4.0790586 = boost
                5.860772 = idf(docFreq=330, maxDocs=42740)
                0.014593119 = queryNorm
              0.7325965 = fieldWeight in 274, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.860772 = idf(docFreq=330, maxDocs=42740)
                0.0625 = fieldNorm(doc=274)
          0.16697757 = weight(abstract_txt:subject in 274) [ClassicSimilarity], result of:
            0.16697757 = score(doc=274,freq=4.0), product of:
              0.3416311 = queryWeight, product of:
                5.9871283 = boost
                3.9101257 = idf(docFreq=2327, maxDocs=42740)
                0.014593119 = queryNorm
              0.48876572 = fieldWeight in 274, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.9101257 = idf(docFreq=2327, maxDocs=42740)
                0.0625 = fieldNorm(doc=274)
        0.32 = coord(8/25)
    
  4. Cheti, A.: ¬Il GRIS dall'elaborazione alla sperimentazione (1997) 0.19
    0.19201325 = sum of:
      0.19201325 = product of:
        1.6001104 = sum of:
          0.55872595 = weight(abstract_txt:gris in 2169) [ClassicSimilarity], result of:
            0.55872595 = score(doc=2169,freq=1.0), product of:
              0.37312725 = queryWeight, product of:
                2.6680071 = boost
                9.583449 = idf(docFreq=7, maxDocs=42740)
                0.014593119 = queryNorm
              1.497414 = fieldWeight in 2169, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.583449 = idf(docFreq=7, maxDocs=42740)
                0.15625 = fieldNorm(doc=2169)
          0.83266246 = weight(abstract_txt:italian in 2169) [ClassicSimilarity], result of:
            0.83266246 = score(doc=2169,freq=2.0), product of:
              0.52441335 = queryWeight, product of:
                5.001098 = boost
                7.1855536 = idf(docFreq=87, maxDocs=42740)
                0.014593119 = queryNorm
              1.587798 = fieldWeight in 2169, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.1855536 = idf(docFreq=87, maxDocs=42740)
                0.15625 = fieldNorm(doc=2169)
          0.20872197 = weight(abstract_txt:subject in 2169) [ClassicSimilarity], result of:
            0.20872197 = score(doc=2169,freq=1.0), product of:
              0.3416311 = queryWeight, product of:
                5.9871283 = boost
                3.9101257 = idf(docFreq=2327, maxDocs=42740)
                0.014593119 = queryNorm
              0.61095715 = fieldWeight in 2169, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9101257 = idf(docFreq=2327, maxDocs=42740)
                0.15625 = fieldNorm(doc=2169)
        0.12 = coord(3/25)
    
  5. Danesi, D.: Chi ha paura dell'uomo nero? : Maltese e il controllo terminologico (1997) 0.19
    0.19201325 = sum of:
      0.19201325 = product of:
        1.6001104 = sum of:
          0.55872595 = weight(abstract_txt:gris in 4750) [ClassicSimilarity], result of:
            0.55872595 = score(doc=4750,freq=1.0), product of:
              0.37312725 = queryWeight, product of:
                2.6680071 = boost
                9.583449 = idf(docFreq=7, maxDocs=42740)
                0.014593119 = queryNorm
              1.497414 = fieldWeight in 4750, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.583449 = idf(docFreq=7, maxDocs=42740)
                0.15625 = fieldNorm(doc=4750)
          0.83266246 = weight(abstract_txt:italian in 4750) [ClassicSimilarity], result of:
            0.83266246 = score(doc=4750,freq=2.0), product of:
              0.52441335 = queryWeight, product of:
                5.001098 = boost
                7.1855536 = idf(docFreq=87, maxDocs=42740)
                0.014593119 = queryNorm
              1.587798 = fieldWeight in 4750, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.1855536 = idf(docFreq=87, maxDocs=42740)
                0.15625 = fieldNorm(doc=4750)
          0.20872197 = weight(abstract_txt:subject in 4750) [ClassicSimilarity], result of:
            0.20872197 = score(doc=4750,freq=1.0), product of:
              0.3416311 = queryWeight, product of:
                5.9871283 = boost
                3.9101257 = idf(docFreq=2327, maxDocs=42740)
                0.014593119 = queryNorm
              0.61095715 = fieldWeight in 4750, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9101257 = idf(docFreq=2327, maxDocs=42740)
                0.15625 = fieldNorm(doc=4750)
        0.12 = coord(3/25)