Search (8 results, page 1 of 1)

  • × author_ss:"Swanson, D.R."
  • × year_i:[1980 TO 1990}
  1. Swanson, D.R.: Historical note: information retrieval and the future of an illusion (1988) 0.01 
    0.009832155 = product of:
  0.024580387 = sum of:
    0.008173384 = weight(_text_:a in 1950) [ClassicSimilarity], result of:
      0.008173384 = score(doc=1950,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.15287387 = fieldWeight in 1950, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.09375 = fieldNorm(doc=1950)
    0.016407004 = product of:
      0.032814007 = sum of:
        0.032814007 = weight(_text_:information in 1950) [ClassicSimilarity], result of:
          0.032814007 = score(doc=1950,freq=6.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.40312737 = fieldWeight in 1950, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.09375 = fieldNorm(doc=1950)
      0.5 = coord(1/2)
  0.4 = coord(2/5)
    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.553-561.
    Source
    Journal of the American Society for Information Science. 39(1988), S.92-98
    Type
    a
  2. Swanson, D.R.: ¬A second example of mutually isolated medical literatures related by implicit, unnoticed connections (1989) 0.01 
    0.009814699 = product of:
  0.024536747 = sum of:
    0.013485395 = weight(_text_:a in 201) [ClassicSimilarity], result of:
      0.013485395 = score(doc=201,freq=4.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.25222903 = fieldWeight in 201, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.109375 = fieldNorm(doc=201)
    0.011051352 = product of:
      0.022102704 = sum of:
        0.022102704 = weight(_text_:information in 201) [ClassicSimilarity], result of:
          0.022102704 = score(doc=201,freq=2.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.27153665 = fieldWeight in 201, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=201)
      0.5 = coord(1/2)
  0.4 = coord(2/5)
    Source
    Journal of the American Society for Information Science. 40(1989), S.432-435
    Type
    a
  3. Swanson, D.R.: Online search for logically-related noninteractive medical literatures : a systematic trial-and-error strategy (1989) 0.01 
    0.009814699 = product of:
  0.024536747 = sum of:
    0.013485395 = weight(_text_:a in 202) [ClassicSimilarity], result of:
      0.013485395 = score(doc=202,freq=4.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.25222903 = fieldWeight in 202, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.109375 = fieldNorm(doc=202)
    0.011051352 = product of:
      0.022102704 = sum of:
        0.022102704 = weight(_text_:information in 202) [ClassicSimilarity], result of:
          0.022102704 = score(doc=202,freq=2.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.27153665 = fieldWeight in 202, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=202)
      0.5 = coord(1/2)
  0.4 = coord(2/5)
    Source
    Journal of the American Society for Information Science. 40(1989), S.356-358
    Type
    a
  4. Swanson, D.R.: Subjective versus objective relevance in bibliographic retrieval systems (1986) 0.01 
    0.0084460005 = product of:
  0.021115001 = sum of:
    0.012184162 = weight(_text_:a in 838) [ClassicSimilarity], result of:
      0.012184162 = score(doc=838,freq=10.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.22789092 = fieldWeight in 838, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.0625 = fieldNorm(doc=838)
    0.0089308405 = product of:
      0.017861681 = sum of:
        0.017861681 = weight(_text_:information in 838) [ClassicSimilarity], result of:
          0.017861681 = score(doc=838,freq=4.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.21943474 = fieldWeight in 838, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0625 = fieldNorm(doc=838)
      0.5 = coord(1/2)
  0.4 = coord(2/5)
    Abstract
    The distinction between subjective and objective relevance of a document to a request, athough heretofore given little explicit recognition, is of importance to information retrieval as well as to certain broader issues in librarianship. Objective relevance is crucial to the design and testing of bibliographic retrieval systems, while subjective relevance is paramount in the operation and use of such sustems. The distinction provides a rationale for a trial-and error mode of interaction with libraries, online databases, and other information systems. The concept of objective relevance introduced here is illuminated by earlier work on logical relevance by Patrick Wilson and William Cooper
    Type
    a
  5. Swanson, D.R.: Two medical literatures that are logically but not bibliographically connected (1987) 0.01 
    0.008234787 = product of:
  0.020586967 = sum of:
    0.009535614 = weight(_text_:a in 200) [ClassicSimilarity], result of:
      0.009535614 = score(doc=200,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.17835285 = fieldWeight in 200, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.109375 = fieldNorm(doc=200)
    0.011051352 = product of:
      0.022102704 = sum of:
        0.022102704 = weight(_text_:information in 200) [ClassicSimilarity], result of:
          0.022102704 = score(doc=200,freq=2.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.27153665 = fieldWeight in 200, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=200)
      0.5 = coord(1/2)
  0.4 = coord(2/5)
    Source
    Journal of the American Society for Information Science. 38(1987), S.228-233
    Type
    a
  6. Swanson, D.R.: Undiscovered public knowledge (1986) 0.00 
    0.002724461 = product of:
  0.013622305 = sum of:
    0.013622305 = weight(_text_:a in 3884) [ClassicSimilarity], result of:
      0.013622305 = score(doc=3884,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.25478977 = fieldWeight in 3884, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.15625 = fieldNorm(doc=3884)
  0.2 = coord(1/5)
    Type
    a
  7. Swanson, D.R.: Migraine and magnesium : eleven neglected connections (1988) 0.00 
    0.0021795689 = product of:
  0.010897844 = sum of:
    0.010897844 = weight(_text_:a in 3885) [ClassicSimilarity], result of:
      0.010897844 = score(doc=3885,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.20383182 = fieldWeight in 3885, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.125 = fieldNorm(doc=3885)
  0.2 = coord(1/5)
    Type
    a
  8. Swanson, D.R.: Fish oil, Raynaud's syndrome and undiscoverd public knowledge (1986) 0.00 
    0.0021795689 = product of:
  0.010897844 = sum of:
    0.010897844 = weight(_text_:a in 199) [ClassicSimilarity], result of:
      0.010897844 = score(doc=199,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.20383182 = fieldWeight in 199, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.125 = fieldNorm(doc=199)
  0.2 = coord(1/5)
    Type
    a