Search (6 results, page 1 of 1)

  • × theme_ss:"Retrievalalgorithmen"
  • × theme_ss:"OPAC"
  1. Koopman, R.: ¬Ein OPAC mit Gewichtungsalgorithmen : Der PICA Micro OPC (1996) 0.04
    0.039384715 = product of:
      0.098461784 = sum of:
        0.048695378 = weight(_text_:u in 4114) [ClassicSimilarity], result of:
          0.048695378 = score(doc=4114,freq=2.0), product of:
            0.13460001 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041106213 = 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)
        0.049766406 = weight(_text_:r in 4114) [ClassicSimilarity], result of:
          0.049766406 = score(doc=4114,freq=2.0), product of:
            0.13607219 = queryWeight, product of:
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.041106213 = queryNorm
            0.36573532 = fieldWeight in 4114, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.078125 = fieldNorm(doc=4114)
      0.4 = coord(2/5)
    
    Source
    Zukunft der Sacherschließung im OPAC: Vorträge des 2. Düsseldorfer OPAC-Kolloquiums am 21. Juni 1995. Hrsg.: E. Niggemann u. K. Lepsky
  2. Oberhauser, O.; Labner, J.: Relevance Ranking in Online-Katalogen : Informationsstand und Perspektiven (2003) 0.02
    0.016005846 = product of:
      0.08002923 = sum of:
        0.08002923 = weight(_text_:o in 2188) [ClassicSimilarity], result of:
          0.08002923 = score(doc=2188,freq=2.0), product of:
            0.20624171 = queryWeight, product of:
              5.017288 = idf(docFreq=795, maxDocs=44218)
              0.041106213 = queryNorm
            0.38803607 = fieldWeight in 2188, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.017288 = idf(docFreq=795, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2188)
      0.2 = coord(1/5)
    
  3. Oberhauser, O.: Relevance Ranking in den Online-Katalogen der "nächsten Generation" (2010) 0.01
    0.013719295 = product of:
      0.068596475 = sum of:
        0.068596475 = weight(_text_:o in 4308) [ClassicSimilarity], result of:
          0.068596475 = score(doc=4308,freq=2.0), product of:
            0.20624171 = queryWeight, product of:
              5.017288 = idf(docFreq=795, maxDocs=44218)
              0.041106213 = queryNorm
            0.33260235 = fieldWeight in 4308, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.017288 = idf(docFreq=795, maxDocs=44218)
              0.046875 = fieldNorm(doc=4308)
      0.2 = coord(1/5)
    
  4. Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992) 0.01
    0.006817353 = product of:
      0.034086764 = sum of:
        0.034086764 = weight(_text_:u in 2731) [ClassicSimilarity], result of:
          0.034086764 = score(doc=2731,freq=2.0), product of:
            0.13460001 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041106213 = 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)
      0.2 = coord(1/5)
    
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  5. Beaulieu, M.; Jones, S.: Interactive searching and interface issues in the Okapi best match probabilistic retrieval system (1998) 0.01
    0.006817353 = product of:
      0.034086764 = sum of:
        0.034086764 = weight(_text_:u in 430) [ClassicSimilarity], result of:
          0.034086764 = score(doc=430,freq=2.0), product of:
            0.13460001 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041106213 = 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)
      0.2 = coord(1/5)
    
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  6. Khoo, C.S.G.; Wan, K.-W.: ¬A simple relevancy-ranking strategy for an interface to Boolean OPACs (2004) 0.00
    0.0019492636 = product of:
      0.009746318 = sum of:
        0.009746318 = product of:
          0.019492636 = sum of:
            0.019492636 = weight(_text_:22 in 2509) [ClassicSimilarity], result of:
              0.019492636 = score(doc=2509,freq=2.0), product of:
                0.14394696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041106213 = 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)
      0.2 = coord(1/5)
    
    Source
    Electronic library. 22(2004) no.2, S.112-120