Search (2 results, page 1 of 1)

  • × author_ss:"Ro, J.S."
  • × theme_ss:"Volltextretrieval"
  1. Ro, J.S.: ¬An evaluation of the applicability of ranking algorithms to improve the effectiveness of full-text retrieval : 1. On the effectiveness of full-text retrieval (1988) 0.01
    0.008992559 = product of:
      0.062947914 = sum of:
        0.012107591 = weight(_text_:information in 4030) [ClassicSimilarity], result of:
          0.012107591 = score(doc=4030,freq=2.0), product of:
            0.052020688 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.029633347 = queryNorm
            0.23274569 = fieldWeight in 4030, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.09375 = fieldNorm(doc=4030)
        0.050840326 = weight(_text_:retrieval in 4030) [ClassicSimilarity], result of:
          0.050840326 = score(doc=4030,freq=4.0), product of:
            0.08963835 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.029633347 = queryNorm
            0.5671716 = fieldWeight in 4030, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.09375 = fieldNorm(doc=4030)
      0.14285715 = coord(2/14)
    
    Source
    Journal of the American Society for Information Science. 39(1988), S.73-78
  2. Tenopir, C.; Ro, J.S.: Full text databases (1990) 0.00
    0.0014268934 = product of:
      0.019976506 = sum of:
        0.019976506 = weight(_text_:information in 1916) [ClassicSimilarity], result of:
          0.019976506 = score(doc=1916,freq=4.0), product of:
            0.052020688 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.029633347 = queryNorm
            0.3840108 = fieldWeight in 1916, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=1916)
      0.071428575 = coord(1/14)
    
    Footnote
    Rez. in: Information technology and libraries. 10(1991) S.156-157 (E. Kanter)
    Series
    New directions in information management; 21

Types