Search (4 results, page 1 of 1)

  • × language_ss:"d"
  • × theme_ss:"Retrievalstudien"
  • × theme_ss:"Suchmaschinen"
  • × year_i:[2000 TO 2010}
  1. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.02
    0.01866093 = product of:
      0.03732186 = sum of:
        0.03732186 = product of:
          0.05598279 = sum of:
            0.006716238 = weight(_text_:s in 261) [ClassicSimilarity], result of:
              0.006716238 = score(doc=261,freq=4.0), product of:
                0.049418733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.04545348 = queryNorm
                0.1359047 = fieldWeight in 261, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.0625 = fieldNorm(doc=261)
            0.049266554 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
              0.049266554 = score(doc=261,freq=2.0), product of:
                0.15917034 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04545348 = 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)
          0.6666667 = coord(2/3)
      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
    Footnote
    Vgl. auch den Bericht in: nfd 53(2002) H.2, S.71
    Source
    nfd Information - Wissenschaft und Praxis. 52(2001) H.7, S.381-392
  2. Griesbaum, J.; Rittberger, M.; Bekavac, B.: Deutsche Suchmaschinen im Vergleich : AltaVista.de, Fireball.de, Google.de und Lycos.de (2002) 0.00
    9.893953E-4 = product of:
      0.0019787906 = sum of:
        0.0019787906 = product of:
          0.0059363716 = sum of:
            0.0059363716 = weight(_text_:s in 1159) [ClassicSimilarity], result of:
              0.0059363716 = score(doc=1159,freq=2.0), product of:
                0.049418733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.04545348 = queryNorm
                0.120123915 = fieldWeight in 1159, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.078125 = fieldNorm(doc=1159)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.201-223
  3. Grasso, L.L.; Wahlig, H.: Google und seine Suchparameter : Eine Top 20-Precision Analyse anhand repräsentativ ausgewählter Anfragen (2005) 0.00
    7.915163E-4 = product of:
      0.0015830325 = sum of:
        0.0015830325 = product of:
          0.0047490974 = sum of:
            0.0047490974 = weight(_text_:s in 3275) [ClassicSimilarity], result of:
              0.0047490974 = score(doc=3275,freq=2.0), product of:
                0.049418733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.04545348 = queryNorm
                0.09609913 = fieldWeight in 3275, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.0625 = fieldNorm(doc=3275)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Information - Wissenschaft und Praxis. 56(2005) H.2, S.77-86
  4. Griesbaum, J.: Evaluierung hybrider Suchsysteme im WWW (2000) 0.00
    5.936372E-4 = product of:
      0.0011872743 = sum of:
        0.0011872743 = product of:
          0.003561823 = sum of:
            0.003561823 = weight(_text_:s in 2482) [ClassicSimilarity], result of:
              0.003561823 = score(doc=2482,freq=2.0), product of:
                0.049418733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.04545348 = queryNorm
                0.072074346 = fieldWeight in 2482, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2482)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    156 S