Search (5 results, page 1 of 1)

  • × language_ss:"d"
  • × theme_ss:"Retrievalstudien"
  1. Oberhauser, O.; Labner, J.: Einführung der automatischen Indexierung im Österreichischen Verbundkatalog? : Bericht über eine empirische Studie (2003) 0.04
    0.043741126 = product of:
      0.08748225 = sum of:
        0.08748225 = product of:
          0.1749645 = sum of:
            0.1749645 = weight(_text_:o in 1878) [ClassicSimilarity], result of:
              0.1749645 = score(doc=1878,freq=2.0), product of:
                0.22544876 = queryWeight, product of:
                  5.017288 = idf(docFreq=795, maxDocs=44218)
                  0.044934385 = queryNorm
                0.77607214 = fieldWeight in 1878, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  5.017288 = idf(docFreq=795, maxDocs=44218)
                  0.109375 = fieldNorm(doc=1878)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  2. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.02
    0.02130796 = product of:
      0.04261592 = sum of:
        0.04261592 = product of:
          0.08523184 = sum of:
            0.08523184 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
              0.08523184 = score(doc=262,freq=2.0), product of:
                0.15735255 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044934385 = queryNorm
                0.5416616 = fieldWeight in 262, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.109375 = fieldNorm(doc=262)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    20.10.2000 12:22:23
  3. Oberhauser, O.; Labner, J.: OPAC-Erweiterung durch automatische Indexierung : Empirische Untersuchung mit Daten aus dem Österreichischen Verbundkatalog (2002) 0.02
    0.018746197 = product of:
      0.037492394 = sum of:
        0.037492394 = product of:
          0.07498479 = sum of:
            0.07498479 = weight(_text_:o in 883) [ClassicSimilarity], result of:
              0.07498479 = score(doc=883,freq=2.0), product of:
                0.22544876 = queryWeight, product of:
                  5.017288 = idf(docFreq=795, maxDocs=44218)
                  0.044934385 = queryNorm
                0.33260235 = fieldWeight in 883, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  5.017288 = idf(docFreq=795, maxDocs=44218)
                  0.046875 = fieldNorm(doc=883)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  4. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.01
    0.012175977 = product of:
      0.024351954 = sum of:
        0.024351954 = product of:
          0.04870391 = sum of:
            0.04870391 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
              0.04870391 = score(doc=261,freq=2.0), product of:
                0.15735255 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044934385 = queryNorm
                0.30952093 = fieldWeight in 261, 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=261)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Die deutschen Suchmaschinen, Abacho, Acoon, Fireball und Lycos sowie die Web-Kataloge Web.de und Yahoo! werden einem Qualitätstest nach relativem Recall, Precision und Availability unterzogen. Die Methoden der Retrievaltests werden vorgestellt. Im Durchschnitt werden bei einem Cut-Off-Wert von 25 ein Recall von rund 22%, eine Precision von knapp 19% und eine Verfügbarkeit von 24% erreicht
  5. Reichert, S.; Mayr, P.: Untersuchung von Relevanzeigenschaften in einem kontrollierten Eyetracking-Experiment (2012) 0.01
    0.009131983 = product of:
      0.018263966 = sum of:
        0.018263966 = product of:
          0.03652793 = sum of:
            0.03652793 = weight(_text_:22 in 328) [ClassicSimilarity], result of:
              0.03652793 = score(doc=328,freq=2.0), product of:
                0.15735255 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.044934385 = queryNorm
                0.23214069 = fieldWeight in 328, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=328)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 7.2012 19:25:54