Search (5 results, page 1 of 1)

  • × language_ss:"d"
  • × theme_ss:"Retrievalstudien"
  1. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.01
    0.0087831635 = product of:
      0.02634949 = sum of:
        0.02634949 = product of:
          0.07904847 = sum of:
            0.07904847 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
              0.07904847 = score(doc=262,freq=2.0), product of:
                0.145937 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0416745 = 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)
          0.33333334 = coord(1/3)
      0.33333334 = coord(1/3)
    
    Date
    20.10.2000 12:22:23
  2. Womser-Hacker, C.: Evaluierung im Information Retrieval (2013) 0.01
    0.006330637 = product of:
      0.01899191 = sum of:
        0.01899191 = product of:
          0.05697573 = sum of:
            0.05697573 = weight(_text_:29 in 728) [ClassicSimilarity], result of:
              0.05697573 = score(doc=728,freq=2.0), product of:
                0.14659786 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0416745 = queryNorm
                0.38865322 = fieldWeight in 728, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.078125 = fieldNorm(doc=728)
          0.33333334 = coord(1/3)
      0.33333334 = coord(1/3)
    
    Date
    5. 4.2013 13:53:29
  3. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.01
    0.0050189504 = product of:
      0.015056851 = sum of:
        0.015056851 = product of:
          0.045170553 = sum of:
            0.045170553 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
              0.045170553 = score(doc=261,freq=2.0), product of:
                0.145937 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0416745 = 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)
          0.33333334 = coord(1/3)
      0.33333334 = coord(1/3)
    
    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
  4. Reichert, S.; Mayr, P.: Untersuchung von Relevanzeigenschaften in einem kontrollierten Eyetracking-Experiment (2012) 0.00
    0.003764213 = product of:
      0.011292639 = sum of:
        0.011292639 = product of:
          0.033877917 = sum of:
            0.033877917 = weight(_text_:22 in 328) [ClassicSimilarity], result of:
              0.033877917 = score(doc=328,freq=2.0), product of:
                0.145937 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0416745 = 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)
          0.33333334 = coord(1/3)
      0.33333334 = coord(1/3)
    
    Date
    22. 7.2012 19:25:54
  5. Günther, M.: Vermitteln Suchmaschinen vollständige Bilder aktueller Themen? : Untersuchung der Gewichtung inhaltlicher Aspekte von Suchmaschinenergebnissen in Deutschland und den USA (2016) 0.00
    0.0031653184 = product of:
      0.009495955 = sum of:
        0.009495955 = product of:
          0.028487865 = sum of:
            0.028487865 = weight(_text_:29 in 3068) [ClassicSimilarity], result of:
              0.028487865 = score(doc=3068,freq=2.0), product of:
                0.14659786 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0416745 = queryNorm
                0.19432661 = fieldWeight in 3068, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3068)
          0.33333334 = coord(1/3)
      0.33333334 = coord(1/3)
    
    Source
    Young information scientists. 1(2016), S.13-29