Search (5 results, page 1 of 1)

  • × theme_ss:"Suchmaschinen"
  • × theme_ss:"Retrievalstudien"
  1. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.04 
    0.040322956 = product of:
  0.10080738 = sum of:
    0.04425738 = weight(_text_:21 in 261) [ClassicSimilarity], result of:
      0.04425738 = score(doc=261,freq=2.0), product of:
        0.16162895 = queryWeight, product of:
          3.0979297 = idf(docFreq=5425, maxDocs=44218)
          0.052173212 = queryNorm
        0.27382088 = fieldWeight in 261, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.0979297 = idf(docFreq=5425, maxDocs=44218)
          0.0625 = fieldNorm(doc=261)
    0.056550004 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
      0.056550004 = score(doc=261,freq=2.0), product of:
        0.1827017 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052173212 = 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)
  0.4 = coord(2/5)
    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
    Date
    21. 2.1997 19:37:24
  2. Grasso, L.L.; Wahlig, H.: Google und seine Suchparameter : Eine Top 20-Precision Analyse anhand repräsentativ ausgewählter Anfragen (2005) 0.01 
    0.008851476 = product of:
  0.04425738 = sum of:
    0.04425738 = weight(_text_:21 in 3275) [ClassicSimilarity], result of:
      0.04425738 = score(doc=3275,freq=2.0), product of:
        0.16162895 = queryWeight, product of:
          3.0979297 = idf(docFreq=5425, maxDocs=44218)
          0.052173212 = queryNorm
        0.27382088 = fieldWeight in 3275, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.0979297 = idf(docFreq=5425, maxDocs=44218)
          0.0625 = fieldNorm(doc=3275)
  0.2 = coord(1/5)
    Date
    21. 2.1997 19:37:24
  3. Eastman, C.M.: 30,000 hits may be better than 300 : precision anomalies in Internet searches (2002) 0.01 
    0.0055321725 = product of:
  0.027660862 = sum of:
    0.027660862 = weight(_text_:21 in 5231) [ClassicSimilarity], result of:
      0.027660862 = score(doc=5231,freq=2.0), product of:
        0.16162895 = queryWeight, product of:
          3.0979297 = idf(docFreq=5425, maxDocs=44218)
          0.052173212 = queryNorm
        0.17113805 = fieldWeight in 5231, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.0979297 = idf(docFreq=5425, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5231)
  0.2 = coord(1/5)
    Date
    21. 7.2006 13:54:10
  4. Schaer, P.; Mayr, P.; Sünkler, S.; Lewandowski, D.: How relevant is the long tail? : a relevance assessment study on million short (2016) 0.01 
    0.0055321725 = product of:
  0.027660862 = sum of:
    0.027660862 = weight(_text_:21 in 3144) [ClassicSimilarity], result of:
      0.027660862 = score(doc=3144,freq=2.0), product of:
        0.16162895 = queryWeight, product of:
          3.0979297 = idf(docFreq=5425, maxDocs=44218)
          0.052173212 = queryNorm
        0.17113805 = fieldWeight in 3144, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.0979297 = idf(docFreq=5425, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3144)
  0.2 = coord(1/5)
    Date
    18.10.2016 12:59:21
  5. Vegt, A. van der; Zuccon, G.; Koopman, B.: Do better search engines really equate to better clinical decisions? : If not, why not? (2021) 0.01 
    0.0055321725 = product of:
  0.027660862 = sum of:
    0.027660862 = weight(_text_:21 in 150) [ClassicSimilarity], result of:
      0.027660862 = score(doc=150,freq=2.0), product of:
        0.16162895 = queryWeight, product of:
          3.0979297 = idf(docFreq=5425, maxDocs=44218)
          0.052173212 = queryNorm
        0.17113805 = fieldWeight in 150, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.0979297 = idf(docFreq=5425, maxDocs=44218)
          0.0390625 = fieldNorm(doc=150)
  0.2 = coord(1/5)
    Date
    21. 1.2021 11:06:16

Authors

Years

Languages

Types