Search (3 results, page 1 of 1)

  • × author_ss:"Dillon, M."
  • × year_i:[1980 TO 1990}
  1. Dillon, M.; Desper, J.: Automatic relevance feedback in Boolean retrieval systems (1980) 0.02 
    0.021161474 = product of:
  0.0846459 = sum of:
    0.066795126 = weight(_text_:retrieval in 5443) [ClassicSimilarity], result of:
      0.066795126 = score(doc=5443,freq=2.0), product of:
        0.124912694 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.041294612 = queryNorm
        0.5347345 = fieldWeight in 5443, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.125 = fieldNorm(doc=5443)
    0.017850775 = weight(_text_:of in 5443) [ClassicSimilarity], result of:
      0.017850775 = score(doc=5443,freq=2.0), product of:
        0.06457475 = queryWeight, product of:
          1.5637573 = idf(docFreq=25162, maxDocs=44218)
          0.041294612 = queryNorm
        0.27643585 = fieldWeight in 5443, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.5637573 = idf(docFreq=25162, maxDocs=44218)
          0.125 = fieldNorm(doc=5443)
  0.25 = coord(2/8)
    Source
    Journal of documentation. 36(1980), S.197-208
  2. Dillon, M.: Enhanced bibliographic record retrieval experiments (1989) 0.01 
    0.008349391 = product of:
  0.066795126 = sum of:
    0.066795126 = weight(_text_:retrieval in 1406) [ClassicSimilarity], result of:
      0.066795126 = score(doc=1406,freq=2.0), product of:
        0.124912694 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.041294612 = queryNorm
        0.5347345 = fieldWeight in 1406, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.125 = fieldNorm(doc=1406)
  0.125 = coord(1/8)
  3. O'Neill, E.T.; Dillon, M.; Vizine-Goetz, D.: Class dispersion between Library of Congress Classification and the Dewey Decimal Classification (1987) 0.00 
    0.0029286426 = product of:
  0.02342914 = sum of:
    0.02342914 = weight(_text_:of in 1160) [ClassicSimilarity], result of:
      0.02342914 = score(doc=1160,freq=18.0), product of:
        0.06457475 = queryWeight, product of:
          1.5637573 = idf(docFreq=25162, maxDocs=44218)
          0.041294612 = queryNorm
        0.36282203 = fieldWeight in 1160, product of:
          4.2426405 = tf(freq=18.0), with freq of:
            18.0 = termFreq=18.0
          1.5637573 = idf(docFreq=25162, maxDocs=44218)
          0.0546875 = fieldNorm(doc=1160)
  0.125 = coord(1/8)
    Abstract
    Two measures are examined that characterize the dispersion of a classification system when mapped to a second classification. One, a distance measure, captures the physical spread of a class when represented in the secon system; the second, from rank-frequency-analysis, characterizes the scatter of tokens over a set of types. The measures are tested by applying them to the library science portions of the LCC and the DDC using a database drawn from MARC records. Class mappings are presented that exemplify four extreme points of the two measures considered together: mappings where both measures score high, mappings where both score low, and mappings where one measure is high and the other is low. The conclusion is that the measures characterize two different properties of dispersion
    Source
    Journal of the American Society for Information Science. 38(1987), S.197-205

Authors

Themes