Document (#31001)

Author
Mikosch, M.
Title
Relevance Ranking in Bibliothek-OPACs : ein aktueller Überblick
Imprint
Köln : Fachhochschule, Institut für Informationswissenschaft
Year
2008
Pages
82 S. + CD
Abstract
Die Suchmaschinentechnologie der Internetsuchmaschinen wie Google und Yahoo haben die Erwartungen der Benutzer von Bibliotheks OPACs verändert. Relevance Ranking Sortierung bei der Ausgabe von Trefferlisten wird von den Benutzern vermehrt als normal angesehen. Bibliotheks-OPACs sind durch die Erwartungen der Benutzer im Zugzwang, sich den Erwartungen anzupassen. Bibliotheken, die damit begonnen haben Relevance Ranking in ihr System zu implementieren, verwenden dabei verschiedene Lösungsansätze. Sowohl die Darstellung als auch die Funktionalität ist ungleich und noch im Stadium der Erprobung und Entwicklung. Die Kataloganreicherung durch Inhaltsverzeichnisse und Abstracts geht tendenziell mit der effektiven Nutzung von bekannten Relevance Ranking Algorithmen in der Umgebung der Bibliotheks-OPACs einher. Um mit den Erwartungen der Benutzer, die sich durch die Nutzung der Internetsuchmaschinen ändern, müssen Bibliotheken sich der Aufgabe stellen, neue Funktionen in ihre OPACs zu implementieren ohne dabei die Hauptfunktionen des OPACs zu behindern.
Footnote
Diplomarbeit im Studiengang Bibliothekswesen
Theme
OPAC

Similar documents (content)

  1. Oberhauser, O.; Labner, J.: Relevance Ranking in Online-Katalogen : Informationsstand und Perspektiven (2003) 0.16
    0.16035391 = sum of:
      0.16035391 = product of:
        0.6681413 = sum of:
          0.019909956 = weight(abstract_txt:sich in 3189) [ClassicSimilarity], result of:
            0.019909956 = score(doc=3189,freq=1.0), product of:
              0.070992105 = queryWeight, product of:
                1.2563683 = boost
                3.5897994 = idf(docFreq=3206, maxDocs=42740)
                0.01574066 = queryNorm
              0.2804531 = fieldWeight in 3189, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5897994 = idf(docFreq=3206, maxDocs=42740)
                0.078125 = fieldNorm(doc=3189)
          0.03346989 = weight(abstract_txt:durch in 3189) [ClassicSimilarity], result of:
            0.03346989 = score(doc=3189,freq=1.0), product of:
              0.10036895 = queryWeight, product of:
                1.493866 = boost
                4.2683973 = idf(docFreq=1626, maxDocs=42740)
                0.01574066 = queryNorm
              0.33346856 = fieldWeight in 3189, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2683973 = idf(docFreq=1626, maxDocs=42740)
                0.078125 = fieldNorm(doc=3189)
          0.09930626 = weight(abstract_txt:benutzer in 3189) [ClassicSimilarity], result of:
            0.09930626 = score(doc=3189,freq=1.0), product of:
              0.20724353 = queryWeight, product of:
                2.1466064 = boost
                6.1334615 = idf(docFreq=251, maxDocs=42740)
                0.01574066 = queryNorm
              0.47917667 = fieldWeight in 3189, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1334615 = idf(docFreq=251, maxDocs=42740)
                0.078125 = fieldNorm(doc=3189)
          0.068939015 = weight(abstract_txt:relevance in 3189) [ClassicSimilarity], result of:
            0.068939015 = score(doc=3189,freq=1.0), product of:
              0.17883514 = queryWeight, product of:
                2.302543 = boost
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.01574066 = queryNorm
              0.3854892 = fieldWeight in 3189, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.078125 = fieldNorm(doc=3189)
          0.20145795 = weight(abstract_txt:ranking in 3189) [ClassicSimilarity], result of:
            0.20145795 = score(doc=3189,freq=4.0), product of:
              0.23027444 = queryWeight, product of:
                2.612788 = boost
                5.5991054 = idf(docFreq=429, maxDocs=42740)
                0.01574066 = queryNorm
              0.8748602 = fieldWeight in 3189, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.5991054 = idf(docFreq=429, maxDocs=42740)
                0.078125 = fieldNorm(doc=3189)
          0.24505822 = weight(abstract_txt:opacs in 3189) [ClassicSimilarity], result of:
            0.24505822 = score(doc=3189,freq=2.0), product of:
              0.37845078 = queryWeight, product of:
                4.10234 = boost
                5.860772 = idf(docFreq=330, maxDocs=42740)
                0.01574066 = queryNorm
              0.64752996 = fieldWeight in 3189, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.860772 = idf(docFreq=330, maxDocs=42740)
                0.078125 = fieldNorm(doc=3189)
        0.24 = coord(6/25)
    
  2. Schulz, U.: Was wir über OPAC-Nutzer wissen : fehlertolerante Suchprozesse in OPACs (1994) 0.14
    0.13916107 = sum of:
      0.13916107 = product of:
        0.6958053 = sum of:
          0.041323278 = weight(abstract_txt:haben in 6) [ClassicSimilarity], result of:
            0.041323278 = score(doc=6,freq=1.0), product of:
              0.08063259 = queryWeight, product of:
                1.0932554 = boost
                4.6856093 = idf(docFreq=1071, maxDocs=42740)
                0.01574066 = queryNorm
              0.51248854 = fieldWeight in 6, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6856093 = idf(docFreq=1071, maxDocs=42740)
                0.109375 = fieldNorm(doc=6)
          0.073865354 = weight(abstract_txt:nutzung in 6) [ClassicSimilarity], result of:
            0.073865354 = score(doc=6,freq=1.0), product of:
              0.11876121 = queryWeight, product of:
                1.3267944 = boost
                5.6865396 = idf(docFreq=393, maxDocs=42740)
                0.01574066 = queryNorm
              0.6219653 = fieldWeight in 6, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.6865396 = idf(docFreq=393, maxDocs=42740)
                0.109375 = fieldNorm(doc=6)
          0.09651462 = weight(abstract_txt:relevance in 6) [ClassicSimilarity], result of:
            0.09651462 = score(doc=6,freq=1.0), product of:
              0.17883514 = queryWeight, product of:
                2.302543 = boost
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.01574066 = queryNorm
              0.5396849 = fieldWeight in 6, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.109375 = fieldNorm(doc=6)
          0.14102057 = weight(abstract_txt:ranking in 6) [ClassicSimilarity], result of:
            0.14102057 = score(doc=6,freq=1.0), product of:
              0.23027444 = queryWeight, product of:
                2.612788 = boost
                5.5991054 = idf(docFreq=429, maxDocs=42740)
                0.01574066 = queryNorm
              0.61240214 = fieldWeight in 6, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5991054 = idf(docFreq=429, maxDocs=42740)
                0.109375 = fieldNorm(doc=6)
          0.3430815 = weight(abstract_txt:opacs in 6) [ClassicSimilarity], result of:
            0.3430815 = score(doc=6,freq=2.0), product of:
              0.37845078 = queryWeight, product of:
                4.10234 = boost
                5.860772 = idf(docFreq=330, maxDocs=42740)
                0.01574066 = queryNorm
              0.90654194 = fieldWeight in 6, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.860772 = idf(docFreq=330, maxDocs=42740)
                0.109375 = fieldNorm(doc=6)
        0.2 = coord(5/25)
    
  3. Raicher, E.: Möglichkeiten und Grenzen von Primo bei der Einführung in deutschsprachigen Bibliotheken und Bibliotheksverbünden (2010) 0.14
    0.13734896 = sum of:
      0.13734896 = product of:
        0.42921552 = sum of:
          0.036142807 = weight(abstract_txt:suchmaschinentechnologie in 1312) [ClassicSimilarity], result of:
            0.036142807 = score(doc=1312,freq=1.0), product of:
              0.13492654 = queryWeight, product of:
                8.571848 = idf(docFreq=21, maxDocs=42740)
                0.01574066 = queryNorm
              0.26787025 = fieldWeight in 1312, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.571848 = idf(docFreq=21, maxDocs=42740)
                0.03125 = fieldNorm(doc=1312)
          0.01180665 = weight(abstract_txt:haben in 1312) [ClassicSimilarity], result of:
            0.01180665 = score(doc=1312,freq=1.0), product of:
              0.08063259 = queryWeight, product of:
                1.0932554 = boost
                4.6856093 = idf(docFreq=1071, maxDocs=42740)
                0.01574066 = queryNorm
              0.14642529 = fieldWeight in 1312, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6856093 = idf(docFreq=1071, maxDocs=42740)
                0.03125 = fieldNorm(doc=1312)
          0.02093878 = weight(abstract_txt:dabei in 1312) [ClassicSimilarity], result of:
            0.02093878 = score(doc=1312,freq=3.0), product of:
              0.08191309 = queryWeight, product of:
                1.101902 = boost
                4.722668 = idf(docFreq=1032, maxDocs=42740)
                0.01574066 = queryNorm
              0.2556219 = fieldWeight in 1312, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.722668 = idf(docFreq=1032, maxDocs=42740)
                0.03125 = fieldNorm(doc=1312)
          0.040468413 = weight(abstract_txt:bibliotheken in 1312) [ClassicSimilarity], result of:
            0.040468413 = score(doc=1312,freq=11.0), product of:
              0.08242128 = queryWeight, product of:
                1.1053149 = boost
                4.737295 = idf(docFreq=1017, maxDocs=42740)
                0.01574066 = queryNorm
              0.49099472 = fieldWeight in 1312, product of:
                3.3166249 = tf(freq=11.0), with freq of:
                  11.0 = termFreq=11.0
                4.737295 = idf(docFreq=1017, maxDocs=42740)
                0.03125 = fieldNorm(doc=1312)
          0.021070713 = weight(abstract_txt:sich in 1312) [ClassicSimilarity], result of:
            0.021070713 = score(doc=1312,freq=7.0), product of:
              0.070992105 = queryWeight, product of:
                1.2563683 = boost
                3.5897994 = idf(docFreq=3206, maxDocs=42740)
                0.01574066 = queryNorm
              0.29680362 = fieldWeight in 1312, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                3.5897994 = idf(docFreq=3206, maxDocs=42740)
                0.03125 = fieldNorm(doc=1312)
          0.037866853 = weight(abstract_txt:durch in 1312) [ClassicSimilarity], result of:
            0.037866853 = score(doc=1312,freq=8.0), product of:
              0.10036895 = queryWeight, product of:
                1.493866 = boost
                4.2683973 = idf(docFreq=1626, maxDocs=42740)
                0.01574066 = queryNorm
              0.37727657 = fieldWeight in 1312, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                4.2683973 = idf(docFreq=1626, maxDocs=42740)
                0.03125 = fieldNorm(doc=1312)
          0.19160837 = weight(abstract_txt:erwartungen in 1312) [ClassicSimilarity], result of:
            0.19160837 = score(doc=1312,freq=4.0), product of:
              0.41022846 = queryWeight, product of:
                3.4873393 = boost
                7.4732356 = idf(docFreq=65, maxDocs=42740)
                0.01574066 = queryNorm
              0.46707723 = fieldWeight in 1312, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                7.4732356 = idf(docFreq=65, maxDocs=42740)
                0.03125 = fieldNorm(doc=1312)
          0.06931293 = weight(abstract_txt:opacs in 1312) [ClassicSimilarity], result of:
            0.06931293 = score(doc=1312,freq=1.0), product of:
              0.37845078 = queryWeight, product of:
                4.10234 = boost
                5.860772 = idf(docFreq=330, maxDocs=42740)
                0.01574066 = queryNorm
              0.18314913 = fieldWeight in 1312, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.860772 = idf(docFreq=330, maxDocs=42740)
                0.03125 = fieldNorm(doc=1312)
        0.32 = coord(8/25)
    
  4. Mittelbach, J.: Modernes Datenmanagement : Linked Open Data und die offene Bibliothek (2015) 0.13
    0.12780683 = sum of:
      0.12780683 = product of:
        0.63903415 = sum of:
          0.036605056 = weight(abstract_txt:bibliotheken in 4469) [ClassicSimilarity], result of:
            0.036605056 = score(doc=4469,freq=1.0), product of:
              0.08242128 = queryWeight, product of:
                1.1053149 = boost
                4.737295 = idf(docFreq=1017, maxDocs=42740)
                0.01574066 = queryNorm
              0.44412142 = fieldWeight in 4469, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.737295 = idf(docFreq=1017, maxDocs=42740)
                0.09375 = fieldNorm(doc=4469)
          0.033788312 = weight(abstract_txt:sich in 4469) [ClassicSimilarity], result of:
            0.033788312 = score(doc=4469,freq=2.0), product of:
              0.070992105 = queryWeight, product of:
                1.2563683 = boost
                3.5897994 = idf(docFreq=3206, maxDocs=42740)
                0.01574066 = queryNorm
              0.47594467 = fieldWeight in 4469, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5897994 = idf(docFreq=3206, maxDocs=42740)
                0.09375 = fieldNorm(doc=4469)
          0.11916752 = weight(abstract_txt:benutzer in 4469) [ClassicSimilarity], result of:
            0.11916752 = score(doc=4469,freq=1.0), product of:
              0.20724353 = queryWeight, product of:
                2.1466064 = boost
                6.1334615 = idf(docFreq=251, maxDocs=42740)
                0.01574066 = queryNorm
              0.575012 = fieldWeight in 4469, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1334615 = idf(docFreq=251, maxDocs=42740)
                0.09375 = fieldNorm(doc=4469)
          0.16206068 = weight(abstract_txt:bibliotheks in 4469) [ClassicSimilarity], result of:
            0.16206068 = score(doc=4469,freq=1.0), product of:
              0.25438654 = queryWeight, product of:
                2.3782582 = boost
                6.7953563 = idf(docFreq=129, maxDocs=42740)
                0.01574066 = queryNorm
              0.63706464 = fieldWeight in 4469, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7953563 = idf(docFreq=129, maxDocs=42740)
                0.09375 = fieldNorm(doc=4469)
          0.28741255 = weight(abstract_txt:erwartungen in 4469) [ClassicSimilarity], result of:
            0.28741255 = score(doc=4469,freq=1.0), product of:
              0.41022846 = queryWeight, product of:
                3.4873393 = boost
                7.4732356 = idf(docFreq=65, maxDocs=42740)
                0.01574066 = queryNorm
              0.7006158 = fieldWeight in 4469, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.4732356 = idf(docFreq=65, maxDocs=42740)
                0.09375 = fieldNorm(doc=4469)
        0.2 = coord(5/25)
    
  5. Beyersdorff, G.: Bibliothekenverbund und lokale Systeme : Bericht über eine Studienreise in die USA vom 24.9.-13.10.1984 (1985) 0.13
    0.1255029 = sum of:
      0.1255029 = product of:
        0.78439313 = sum of:
          0.03981991 = weight(abstract_txt:sich in 6118) [ClassicSimilarity], result of:
            0.03981991 = score(doc=6118,freq=1.0), product of:
              0.070992105 = queryWeight, product of:
                1.2563683 = boost
                3.5897994 = idf(docFreq=3206, maxDocs=42740)
                0.01574066 = queryNorm
              0.5609062 = fieldWeight in 6118, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5897994 = idf(docFreq=3206, maxDocs=42740)
                0.15625 = fieldNorm(doc=6118)
          0.06693978 = weight(abstract_txt:durch in 6118) [ClassicSimilarity], result of:
            0.06693978 = score(doc=6118,freq=1.0), product of:
              0.10036895 = queryWeight, product of:
                1.493866 = boost
                4.2683973 = idf(docFreq=1626, maxDocs=42740)
                0.01574066 = queryNorm
              0.6669371 = fieldWeight in 6118, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2683973 = idf(docFreq=1626, maxDocs=42740)
                0.15625 = fieldNorm(doc=6118)
          0.19861253 = weight(abstract_txt:benutzer in 6118) [ClassicSimilarity], result of:
            0.19861253 = score(doc=6118,freq=1.0), product of:
              0.20724353 = queryWeight, product of:
                2.1466064 = boost
                6.1334615 = idf(docFreq=251, maxDocs=42740)
                0.01574066 = queryNorm
              0.95835334 = fieldWeight in 6118, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1334615 = idf(docFreq=251, maxDocs=42740)
                0.15625 = fieldNorm(doc=6118)
          0.47902092 = weight(abstract_txt:erwartungen in 6118) [ClassicSimilarity], result of:
            0.47902092 = score(doc=6118,freq=1.0), product of:
              0.41022846 = queryWeight, product of:
                3.4873393 = boost
                7.4732356 = idf(docFreq=65, maxDocs=42740)
                0.01574066 = queryNorm
              1.167693 = fieldWeight in 6118, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.4732356 = idf(docFreq=65, maxDocs=42740)
                0.15625 = fieldNorm(doc=6118)
        0.16 = coord(4/25)