Search (3 results, page 1 of 1)

  • × author_ss:"Walker, S."
  • × theme_ss:"OPAC"
  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  1. Walker, S.: Subject access in online catalogues (1991) 0.00
    0.0012866687 = product of:
      0.0025733374 = sum of:
        0.0025733374 = product of:
          0.005146675 = sum of:
            0.005146675 = weight(_text_:s in 5690) [ClassicSimilarity], result of:
              0.005146675 = score(doc=5690,freq=4.0), product of:
                0.037869733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.034831148 = queryNorm
                0.1359047 = fieldWeight in 5690, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.0625 = fieldNorm(doc=5690)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.23-33
  2. Walker, S.; DeVere, R.: Improving subject retrieval in online catalogues : T.2: Relevance feedback and query expansion (1990) 0.00
    0.0011372651 = product of:
      0.0022745302 = sum of:
        0.0022745302 = product of:
          0.0045490605 = sum of:
            0.0045490605 = weight(_text_:s in 1816) [ClassicSimilarity], result of:
              0.0045490605 = score(doc=1816,freq=2.0), product of:
                0.037869733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.034831148 = queryNorm
                0.120123915 = fieldWeight in 1816, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.078125 = fieldNorm(doc=1816)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  3. Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992) 0.00
    0.0011258351 = product of:
      0.0022516702 = sum of:
        0.0022516702 = product of:
          0.0045033405 = sum of:
            0.0045033405 = weight(_text_:s in 2731) [ClassicSimilarity], result of:
              0.0045033405 = score(doc=2731,freq=4.0), product of:
                0.037869733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.034831148 = queryNorm
                0.118916616 = fieldWeight in 2731, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2731)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of documentation. 48(1992) no.4, S.406-421

Types