Search (2 results, page 1 of 1)

  • × year_i:[1980 TO 1990}
  • × theme_ss:"Volltextretrieval"
  1. Dubois, C.P.R.: Free text vs. controlled vocabulary; a reassessment (1987) 0.01 
    0.012845224 = product of:
  0.07707134 = sum of:
    0.07707134 = weight(_text_:wide in 2048) [ClassicSimilarity], result of:
      0.07707134 = score(doc=2048,freq=2.0), product of:
        0.19679762 = queryWeight, product of:
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.044416238 = queryNorm
        0.3916274 = fieldWeight in 2048, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.4307585 = idf(docFreq=1430, maxDocs=44218)
          0.0625 = fieldNorm(doc=2048)
  0.16666667 = coord(1/6)
    Abstract
    Free text and controlled vocabulary searching can no longer be viewed as antagonistic techniques in information retrieval since they both display advantages and weaknesses dependent on a fairly wide range of context, with the option to use both increasingly favoured. An attempt is made to present a list of features associated with the two techniques and to suggest a methodology to assist in deciding on the optimal retrieval technique for a particular purpose. The relevance of the techniques in expert systems and full text contexts is also discussed. Finally, recommendations for further research are suggested, concentrating on survey techniques in real-life retrieval situations
  2. Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989) 0.00 
    0.0030088935 = product of:
  0.01805336 = sum of:
    0.01805336 = product of:
      0.03610672 = sum of:
        0.03610672 = weight(_text_:22 in 3564) [ClassicSimilarity], result of:
          0.03610672 = score(doc=3564,freq=2.0), product of:
            0.1555381 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044416238 = queryNorm
            0.23214069 = fieldWeight in 3564, 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=3564)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    9. 1.1996 10:22:31

Authors

Types