Search (6 results, page 1 of 1)

  • × language_ss:"d"
  • × theme_ss:"Retrievalstudien"
  • × type_ss:"a"
  1. Günther, M.: Vermitteln Suchmaschinen vollständige Bilder aktueller Themen? : Untersuchung der Gewichtung inhaltlicher Aspekte von Suchmaschinenergebnissen in Deutschland und den USA (2016) 0.01
    0.0050620087 = product of:
      0.020248035 = sum of:
        0.020248035 = product of:
          0.050620086 = sum of:
            0.025770409 = weight(_text_:28 in 3068) [ClassicSimilarity], result of:
              0.025770409 = score(doc=3068,freq=2.0), product of:
                0.13022332 = queryWeight, product of:
                  3.5822632 = idf(docFreq=3342, maxDocs=44218)
                  0.036352247 = queryNorm
                0.19789396 = fieldWeight in 3068, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5822632 = idf(docFreq=3342, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3068)
            0.024849677 = weight(_text_:29 in 3068) [ClassicSimilarity], result of:
              0.024849677 = score(doc=3068,freq=2.0), product of:
                0.12787583 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.036352247 = 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)
          0.4 = coord(2/5)
      0.25 = coord(1/4)
    
    Date
    28. 7.2016 16:03:34
    Source
    Young information scientists. 1(2016), S.13-29
  2. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.00
    0.003447659 = product of:
      0.013790636 = sum of:
        0.013790636 = product of:
          0.06895318 = sum of:
            0.06895318 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
              0.06895318 = score(doc=262,freq=2.0), product of:
                0.12729937 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.036352247 = 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)
          0.2 = coord(1/5)
      0.25 = coord(1/4)
    
    Date
    20.10.2000 12:22:23
  3. Kluck, M.: ¬Eine deutschsprachige Testdatenbank für moderne Erschließungs- und Retrievalsysteme : German Indexing and Retrieval Testdatabase - GIRT (1996) 0.00
    0.003092449 = product of:
      0.012369796 = sum of:
        0.012369796 = product of:
          0.061848976 = sum of:
            0.061848976 = weight(_text_:28 in 5269) [ClassicSimilarity], result of:
              0.061848976 = score(doc=5269,freq=2.0), product of:
                0.13022332 = queryWeight, product of:
                  3.5822632 = idf(docFreq=3342, maxDocs=44218)
                  0.036352247 = queryNorm
                0.4749455 = fieldWeight in 5269, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5822632 = idf(docFreq=3342, maxDocs=44218)
                  0.09375 = fieldNorm(doc=5269)
          0.2 = coord(1/5)
      0.25 = coord(1/4)
    
    Date
    28. 9.1996 20:12:47
  4. Womser-Hacker, C.: Evaluierung im Information Retrieval (2013) 0.00
    0.0024849677 = product of:
      0.009939871 = sum of:
        0.009939871 = product of:
          0.049699355 = sum of:
            0.049699355 = weight(_text_:29 in 728) [ClassicSimilarity], result of:
              0.049699355 = score(doc=728,freq=2.0), product of:
                0.12787583 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.036352247 = 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)
          0.2 = coord(1/5)
      0.25 = coord(1/4)
    
    Date
    5. 4.2013 13:53:29
  5. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.00
    0.001970091 = product of:
      0.007880364 = sum of:
        0.007880364 = product of:
          0.039401818 = sum of:
            0.039401818 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
              0.039401818 = score(doc=261,freq=2.0), product of:
                0.12729937 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.036352247 = 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)
          0.2 = coord(1/5)
      0.25 = coord(1/4)
    
    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
  6. Reichert, S.; Mayr, P.: Untersuchung von Relevanzeigenschaften in einem kontrollierten Eyetracking-Experiment (2012) 0.00
    0.0014775682 = product of:
      0.0059102727 = sum of:
        0.0059102727 = product of:
          0.029551363 = sum of:
            0.029551363 = weight(_text_:22 in 328) [ClassicSimilarity], result of:
              0.029551363 = score(doc=328,freq=2.0), product of:
                0.12729937 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.036352247 = 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)
          0.2 = coord(1/5)
      0.25 = coord(1/4)
    
    Date
    22. 7.2012 19:25:54