Search (11 results, page 1 of 1)

  • × theme_ss:"Retrievalstudien"
  • × type_ss:"a"
  • × 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) 0.04 
    0.044222556 = product of:
  0.08844511 = sum of:
    0.08844511 = sum of:
      0.047952913 = weight(_text_:w in 261) [ClassicSimilarity], result of:
        0.047952913 = score(doc=261,freq=2.0), product of:
          0.14236498 = queryWeight, product of:
            3.8108058 = idf(docFreq=2659, maxDocs=44218)
            0.037358236 = queryNorm
          0.33683082 = fieldWeight in 261, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.8108058 = idf(docFreq=2659, maxDocs=44218)
            0.0625 = fieldNorm(doc=261)
      0.040492203 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
        0.040492203 = score(doc=261,freq=2.0), product of:
          0.13082218 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.037358236 = 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)
    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
  2. Fan, W.; Luo, M.; Wang, L.; Xi, W.; Fox, E.A.: Tuning before feedback : combining ranking discovery and blind feedback for robust retrieval (2004) 0.02 
    0.021192394 = product of:
  0.04238479 = sum of:
    0.04238479 = product of:
      0.08476958 = sum of:
        0.08476958 = weight(_text_:w in 4052) [ClassicSimilarity], result of:
          0.08476958 = score(doc=4052,freq=4.0), product of:
            0.14236498 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.037358236 = queryNorm
            0.5954384 = fieldWeight in 4052, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.078125 = fieldNorm(doc=4052)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  3. Hiemstra, D.; Kraaij, W.: ¬A language-modeling approach to TREC (2005) 0.02 
    0.017982341 = product of:
  0.035964683 = sum of:
    0.035964683 = product of:
      0.071929365 = sum of:
        0.071929365 = weight(_text_:w in 5091) [ClassicSimilarity], result of:
          0.071929365 = score(doc=5091,freq=2.0), product of:
            0.14236498 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.037358236 = queryNorm
            0.5052462 = fieldWeight in 5091, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.09375 = fieldNorm(doc=5091)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  4. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.02 
    0.017715339 = product of:
  0.035430677 = sum of:
    0.035430677 = product of:
      0.070861354 = sum of:
        0.070861354 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
          0.070861354 = score(doc=6438,freq=2.0), product of:
            0.13082218 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.037358236 = queryNorm
            0.5416616 = fieldWeight in 6438, 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=6438)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    11. 8.2001 16:22:19
  5. Leininger, K.: Interindexer consistency in PsychINFO (2000) 0.01 
    0.007592288 = product of:
  0.015184576 = sum of:
    0.015184576 = product of:
      0.030369151 = sum of:
        0.030369151 = weight(_text_:22 in 2552) [ClassicSimilarity], result of:
          0.030369151 = score(doc=2552,freq=2.0), product of:
            0.13082218 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.037358236 = queryNorm
            0.23214069 = fieldWeight in 2552, 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=2552)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    9. 2.1997 18:44:22
  6. Mettrop, W.; Nieuwenhuysen, P.: Internet search engines : fluctuations in document accessibility (2001) 0.01 
    0.007492643 = product of:
  0.014985286 = sum of:
    0.014985286 = product of:
      0.029970571 = sum of:
        0.029970571 = weight(_text_:w in 4481) [ClassicSimilarity], result of:
          0.029970571 = score(doc=4481,freq=2.0), product of:
            0.14236498 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.037358236 = queryNorm
            0.21051927 = fieldWeight in 4481, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4481)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  7. Radev, D.R.; Libner, K.; Fan, W.: Getting answers to natural language questions on the Web (2002) 0.01 
    0.007492643 = product of:
  0.014985286 = sum of:
    0.014985286 = product of:
      0.029970571 = sum of:
        0.029970571 = weight(_text_:w in 5204) [ClassicSimilarity], result of:
          0.029970571 = score(doc=5204,freq=2.0), product of:
            0.14236498 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.037358236 = queryNorm
            0.21051927 = fieldWeight in 5204, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5204)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  8. Saracevic, T.: Effects of inconsistent relevance judgments on information retrieval test results : a historical perspective (2008) 0.01 
    0.007492643 = product of:
  0.014985286 = sum of:
    0.014985286 = product of:
      0.029970571 = sum of:
        0.029970571 = weight(_text_:w in 5585) [ClassicSimilarity], result of:
          0.029970571 = score(doc=5585,freq=2.0), product of:
            0.14236498 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.037358236 = queryNorm
            0.21051927 = fieldWeight in 5585, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5585)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Content
    Beitrag in einem Themenheft 'The Influence of F. W. Lancaster on Information Science and on Libraries', das als Festschrift für F.W. Lancaster deklariert ist.
  9. King, D.W.: Blazing new trails : in celebration of an audacious career (2000) 0.01 
    0.006326907 = product of:
  0.012653814 = sum of:
    0.012653814 = product of:
      0.025307627 = sum of:
        0.025307627 = weight(_text_:22 in 1184) [ClassicSimilarity], result of:
          0.025307627 = score(doc=1184,freq=2.0), product of:
            0.13082218 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.037358236 = queryNorm
            0.19345059 = fieldWeight in 1184, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1184)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 9.1997 19:16:05
  10. Petrelli, D.: On the role of user-centred evaluation in the advancement of interactive information retrieval (2008) 0.01 
    0.006326907 = product of:
  0.012653814 = sum of:
    0.012653814 = product of:
      0.025307627 = sum of:
        0.025307627 = weight(_text_:22 in 2026) [ClassicSimilarity], result of:
          0.025307627 = score(doc=2026,freq=2.0), product of:
            0.13082218 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.037358236 = queryNorm
            0.19345059 = fieldWeight in 2026, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2026)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Information processing and management. 44(2008) no.1, S.22-38
  11. Larsen, B.; Ingwersen, P.; Lund, B.: Data fusion according to the principle of polyrepresentation (2009) 0.01 
    0.0050615254 = product of:
  0.010123051 = sum of:
    0.010123051 = product of:
      0.020246102 = sum of:
        0.020246102 = weight(_text_:22 in 2752) [ClassicSimilarity], result of:
          0.020246102 = score(doc=2752,freq=2.0), product of:
            0.13082218 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.037358236 = queryNorm
            0.15476047 = fieldWeight in 2752, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03125 = fieldNorm(doc=2752)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 3.2009 18:48:28

Authors

Languages

  • e 10
  • d 1

Themes