Search (4 results, page 1 of 1)

  • × theme_ss:"Retrievalalgorithmen"
  • × theme_ss:"OPAC"
  1. Koopman, R.: ¬Ein OPAC mit Gewichtungsalgorithmen : Der PICA Micro OPC (1996) 0.01
    0.013506081 = product of:
      0.027012162 = sum of:
        0.027012162 = product of:
          0.054024324 = sum of:
            0.054024324 = weight(_text_:u in 4114) [ClassicSimilarity], result of:
              0.054024324 = score(doc=4114,freq=2.0), product of:
                0.14932987 = queryWeight, product of:
                  3.2744443 = idf(docFreq=4547, maxDocs=44218)
                  0.045604642 = queryNorm
                0.3617784 = fieldWeight in 4114, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.2744443 = idf(docFreq=4547, maxDocs=44218)
                  0.078125 = fieldNorm(doc=4114)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Zukunft der Sacherschließung im OPAC: Vorträge des 2. Düsseldorfer OPAC-Kolloquiums am 21. Juni 1995. Hrsg.: E. Niggemann u. K. Lepsky
  2. Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992) 0.01
    0.009454256 = product of:
      0.018908512 = sum of:
        0.018908512 = product of:
          0.037817024 = sum of:
            0.037817024 = weight(_text_:u in 2731) [ClassicSimilarity], result of:
              0.037817024 = score(doc=2731,freq=2.0), product of:
                0.14932987 = queryWeight, product of:
                  3.2744443 = idf(docFreq=4547, maxDocs=44218)
                  0.045604642 = queryNorm
                0.25324488 = fieldWeight in 2731, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.2744443 = idf(docFreq=4547, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2731)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  3. Beaulieu, M.; Jones, S.: Interactive searching and interface issues in the Okapi best match probabilistic retrieval system (1998) 0.01
    0.009454256 = product of:
      0.018908512 = sum of:
        0.018908512 = product of:
          0.037817024 = sum of:
            0.037817024 = weight(_text_:u in 430) [ClassicSimilarity], result of:
              0.037817024 = score(doc=430,freq=2.0), product of:
                0.14932987 = queryWeight, product of:
                  3.2744443 = idf(docFreq=4547, maxDocs=44218)
                  0.045604642 = queryNorm
                0.25324488 = fieldWeight in 430, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.2744443 = idf(docFreq=4547, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=430)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  4. Khoo, C.S.G.; Wan, K.-W.: ¬A simple relevancy-ranking strategy for an interface to Boolean OPACs (2004) 0.01
    0.0054064495 = product of:
      0.010812899 = sum of:
        0.010812899 = product of:
          0.021625798 = sum of:
            0.021625798 = weight(_text_:22 in 2509) [ClassicSimilarity], result of:
              0.021625798 = score(doc=2509,freq=2.0), product of:
                0.1596997 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045604642 = queryNorm
                0.1354154 = fieldWeight in 2509, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.02734375 = fieldNorm(doc=2509)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Electronic library. 22(2004) no.2, S.112-120