Document (#11115)

Author
Dubois, C.P.R.
Title
Free text vs. controlled vocabulary; a reassessment
Source
Online review. 11(1987), S.243-253
Year
1987
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
Theme
Volltextretrieval

Similar documents (author)

  1. Dubois, C.P.R.: Text retrieval 92 : summary of papers and trends (1993) 6.18 
    6.1812773 = sum of:
  6.1812773 = weight(author_txt:dubois in 6252) [ClassicSimilarity], result of:
    6.1812773 = fieldWeight in 6252, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.890043 = idf(docFreq=5, maxDocs=43556)
      0.625 = fieldNorm(doc=6252)
  2. Schulz-DuBois, E.O.: Arbeiten deutscher Wissenschaftler, die weltweit am häufigsten zitiert wurden (1984) 4.95 
    4.9450216 = sum of:
  4.9450216 = weight(author_txt:dubois in 359) [ClassicSimilarity], result of:
    4.9450216 = fieldWeight in 359, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.890043 = idf(docFreq=5, maxDocs=43556)
      0.5 = fieldNorm(doc=359)
  3. Dubois, D.; Prade, H.: Measuring and updating information (1991) 4.95 
    4.9450216 = sum of:
  4.9450216 = weight(author_txt:dubois in 4106) [ClassicSimilarity], result of:
    4.9450216 = fieldWeight in 4106, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.890043 = idf(docFreq=5, maxDocs=43556)
      0.5 = fieldNorm(doc=4106)
  4. Bosc, P.; Dubois, D.; Prade, H.: Fuzzy functional dependencies and redundancy elimination (1998) 3.71 
    3.7087662 = sum of:
  3.7087662 = weight(author_txt:dubois in 1588) [ClassicSimilarity], result of:
    3.7087662 = fieldWeight in 1588, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.890043 = idf(docFreq=5, maxDocs=43556)
      0.375 = fieldNorm(doc=1588)

Similar documents (content)

  1. Srinivasan, P.: Optimal document-indexing vocabulary for MEDLINE (1996) 0.19 
    0.18668775 = sum of:
  0.18668775 = product of:
    0.77786565 = sum of:
      0.06520429 = weight(abstract_txt:contexts in 6700) [ClassicSimilarity], result of:
        0.06520429 = score(doc=6700,freq=1.0), product of:
          0.120119765 = queryWeight, product of:
            1.0028472 = boost
            5.7901587 = idf(docFreq=361, maxDocs=43556)
            0.020686606 = queryNorm
          0.54282737 = fieldWeight in 6700, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.7901587 = idf(docFreq=361, maxDocs=43556)
            0.09375 = fieldNorm(doc=6700)
      0.08448728 = weight(abstract_txt:retrieval in 6700) [ClassicSimilarity], result of:
        0.08448728 = score(doc=6700,freq=4.0), product of:
          0.12971145 = queryWeight, product of:
            1.8050004 = boost
            3.4738557 = idf(docFreq=3669, maxDocs=43556)
            0.020686606 = queryNorm
          0.65134794 = fieldWeight in 6700, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            3.4738557 = idf(docFreq=3669, maxDocs=43556)
            0.09375 = fieldNorm(doc=6700)
      0.10371846 = weight(abstract_txt:vocabulary in 6700) [ClassicSimilarity], result of:
        0.10371846 = score(doc=6700,freq=1.0), product of:
          0.20622645 = queryWeight, product of:
            1.8582952 = boost
            5.364638 = idf(docFreq=553, maxDocs=43556)
            0.020686606 = queryNorm
          0.5029348 = fieldWeight in 6700, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.364638 = idf(docFreq=553, maxDocs=43556)
            0.09375 = fieldNorm(doc=6700)
      0.15525422 = weight(abstract_txt:controlled in 6700) [ClassicSimilarity], result of:
        0.15525422 = score(doc=6700,freq=2.0), product of:
          0.21418676 = queryWeight, product of:
            1.8938205 = boost
            5.4671946 = idf(docFreq=499, maxDocs=43556)
            0.020686606 = queryNorm
          0.7248544 = fieldWeight in 6700, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.4671946 = idf(docFreq=499, maxDocs=43556)
            0.09375 = fieldNorm(doc=6700)
      0.20530316 = weight(abstract_txt:free in 6700) [ClassicSimilarity], result of:
        0.20530316 = score(doc=6700,freq=3.0), product of:
          0.22542237 = queryWeight, product of:
            1.9428579 = boost
            5.6087584 = idf(docFreq=433, maxDocs=43556)
            0.020686606 = queryNorm
          0.91074884 = fieldWeight in 6700, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            5.6087584 = idf(docFreq=433, maxDocs=43556)
            0.09375 = fieldNorm(doc=6700)
      0.16389823 = weight(abstract_txt:text in 6700) [ClassicSimilarity], result of:
        0.16389823 = score(doc=6700,freq=6.0), product of:
          0.17625299 = queryWeight, product of:
            2.1040516 = boost
            4.0494018 = idf(docFreq=2063, maxDocs=43556)
            0.020686606 = queryNorm
          0.92990327 = fieldWeight in 6700, product of:
            2.4494898 = tf(freq=6.0), with freq of:
              6.0 = termFreq=6.0
            4.0494018 = idf(docFreq=2063, maxDocs=43556)
            0.09375 = fieldNorm(doc=6700)
    0.24 = coord(6/25)
  2. Z39.19-2005: Guidelines for the construction, format, and management of monolingual controlled vocabularies (2005) 0.14 
    0.14068265 = sum of:
  0.14068265 = product of:
    0.5861777 = sum of:
      0.05387542 = weight(abstract_txt:recommendations in 1706) [ClassicSimilarity], result of:
        0.05387542 = score(doc=1706,freq=1.0), product of:
          0.11943866 = queryWeight, product of:
            5.77372 = idf(docFreq=367, maxDocs=43556)
            0.020686606 = queryNorm
          0.45107186 = fieldWeight in 1706, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.77372 = idf(docFreq=367, maxDocs=43556)
            0.078125 = fieldNorm(doc=1706)
      0.084996164 = weight(abstract_txt:display in 1706) [ClassicSimilarity], result of:
        0.084996164 = score(doc=1706,freq=2.0), product of:
          0.12847167 = queryWeight, product of:
            1.0371252 = boost
            5.9880705 = idf(docFreq=296, maxDocs=43556)
            0.020686606 = queryNorm
          0.66159457 = fieldWeight in 1706, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.9880705 = idf(docFreq=296, maxDocs=43556)
            0.078125 = fieldNorm(doc=1706)
      0.035203036 = weight(abstract_txt:retrieval in 1706) [ClassicSimilarity], result of:
        0.035203036 = score(doc=1706,freq=1.0), product of:
          0.12971145 = queryWeight, product of:
            1.8050004 = boost
            3.4738557 = idf(docFreq=3669, maxDocs=43556)
            0.020686606 = queryNorm
          0.27139497 = fieldWeight in 1706, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.4738557 = idf(docFreq=3669, maxDocs=43556)
            0.078125 = fieldNorm(doc=1706)
      0.1497047 = weight(abstract_txt:vocabulary in 1706) [ClassicSimilarity], result of:
        0.1497047 = score(doc=1706,freq=3.0), product of:
          0.20622645 = queryWeight, product of:
            1.8582952 = boost
            5.364638 = idf(docFreq=553, maxDocs=43556)
            0.020686606 = queryNorm
          0.72592384 = fieldWeight in 1706, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            5.364638 = idf(docFreq=553, maxDocs=43556)
            0.078125 = fieldNorm(doc=1706)
      0.15845568 = weight(abstract_txt:controlled in 1706) [ClassicSimilarity], result of:
        0.15845568 = score(doc=1706,freq=3.0), product of:
          0.21418676 = queryWeight, product of:
            1.8938205 = boost
            5.4671946 = idf(docFreq=499, maxDocs=43556)
            0.020686606 = queryNorm
          0.73980147 = fieldWeight in 1706, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            5.4671946 = idf(docFreq=499, maxDocs=43556)
            0.078125 = fieldNorm(doc=1706)
      0.10394268 = weight(abstract_txt:techniques in 1706) [ClassicSimilarity], result of:
        0.10394268 = score(doc=1706,freq=1.0), product of:
          0.2938329 = queryWeight, product of:
            3.136951 = boost
            4.527969 = idf(docFreq=1278, maxDocs=43556)
            0.020686606 = queryNorm
          0.35374758 = fieldWeight in 1706, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.527969 = idf(docFreq=1278, maxDocs=43556)
            0.078125 = fieldNorm(doc=1706)
    0.24 = coord(6/25)
  3. Jones, I.; Cunliffe, D.; Tudhope, D.: Natural language processing and knowledge organization systems as an aid to retrieval (2004) 0.13 
    0.12854613 = sum of:
  0.12854613 = product of:
    0.5356089 = sum of:
      0.035203036 = weight(abstract_txt:retrieval in 3675) [ClassicSimilarity], result of:
        0.035203036 = score(doc=3675,freq=1.0), product of:
          0.12971145 = queryWeight, product of:
            1.8050004 = boost
            3.4738557 = idf(docFreq=3669, maxDocs=43556)
            0.020686606 = queryNorm
          0.27139497 = fieldWeight in 3675, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.4738557 = idf(docFreq=3669, maxDocs=43556)
            0.078125 = fieldNorm(doc=3675)
      0.08643205 = weight(abstract_txt:vocabulary in 3675) [ClassicSimilarity], result of:
        0.08643205 = score(doc=3675,freq=1.0), product of:
          0.20622645 = queryWeight, product of:
            1.8582952 = boost
            5.364638 = idf(docFreq=553, maxDocs=43556)
            0.020686606 = queryNorm
          0.41911232 = fieldWeight in 3675, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.364638 = idf(docFreq=553, maxDocs=43556)
            0.078125 = fieldNorm(doc=3675)
      0.09148443 = weight(abstract_txt:controlled in 3675) [ClassicSimilarity], result of:
        0.09148443 = score(doc=3675,freq=1.0), product of:
          0.21418676 = queryWeight, product of:
            1.8938205 = boost
            5.4671946 = idf(docFreq=499, maxDocs=43556)
            0.020686606 = queryNorm
          0.42712456 = fieldWeight in 3675, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.4671946 = idf(docFreq=499, maxDocs=43556)
            0.078125 = fieldNorm(doc=3675)
      0.13969111 = weight(abstract_txt:free in 3675) [ClassicSimilarity], result of:
        0.13969111 = score(doc=3675,freq=2.0), product of:
          0.22542237 = queryWeight, product of:
            1.9428579 = boost
            5.6087584 = idf(docFreq=433, maxDocs=43556)
            0.020686606 = queryNorm
          0.6196861 = fieldWeight in 3675, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.6087584 = idf(docFreq=433, maxDocs=43556)
            0.078125 = fieldNorm(doc=3675)
      0.078855574 = weight(abstract_txt:text in 3675) [ClassicSimilarity], result of:
        0.078855574 = score(doc=3675,freq=2.0), product of:
          0.17625299 = queryWeight, product of:
            2.1040516 = boost
            4.0494018 = idf(docFreq=2063, maxDocs=43556)
            0.020686606 = queryNorm
          0.4473999 = fieldWeight in 3675, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.0494018 = idf(docFreq=2063, maxDocs=43556)
            0.078125 = fieldNorm(doc=3675)
      0.10394268 = weight(abstract_txt:techniques in 3675) [ClassicSimilarity], result of:
        0.10394268 = score(doc=3675,freq=1.0), product of:
          0.2938329 = queryWeight, product of:
            3.136951 = boost
            4.527969 = idf(docFreq=1278, maxDocs=43556)
            0.020686606 = queryNorm
          0.35374758 = fieldWeight in 3675, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.527969 = idf(docFreq=1278, maxDocs=43556)
            0.078125 = fieldNorm(doc=3675)
    0.24 = coord(6/25)
  4. Boyce, B.R.; McLain, J.P.: Entry point depth and online search using a controlled vocabulary (1989) 0.13 
    0.12568071 = sum of:
  0.12568071 = product of:
    0.62840354 = sum of:
      0.07316813 = weight(abstract_txt:retrieval in 2287) [ClassicSimilarity], result of:
        0.07316813 = score(doc=2287,freq=3.0), product of:
          0.12971145 = queryWeight, product of:
            1.8050004 = boost
            3.4738557 = idf(docFreq=3669, maxDocs=43556)
            0.020686606 = queryNorm
          0.5640838 = fieldWeight in 2287, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            3.4738557 = idf(docFreq=3669, maxDocs=43556)
            0.09375 = fieldNorm(doc=2287)
      0.17964564 = weight(abstract_txt:vocabulary in 2287) [ClassicSimilarity], result of:
        0.17964564 = score(doc=2287,freq=3.0), product of:
          0.20622645 = queryWeight, product of:
            1.8582952 = boost
            5.364638 = idf(docFreq=553, maxDocs=43556)
            0.020686606 = queryNorm
          0.87110865 = fieldWeight in 2287, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            5.364638 = idf(docFreq=553, maxDocs=43556)
            0.09375 = fieldNorm(doc=2287)
      0.1901468 = weight(abstract_txt:controlled in 2287) [ClassicSimilarity], result of:
        0.1901468 = score(doc=2287,freq=3.0), product of:
          0.21418676 = queryWeight, product of:
            1.8938205 = boost
            5.4671946 = idf(docFreq=499, maxDocs=43556)
            0.020686606 = queryNorm
          0.8877617 = fieldWeight in 2287, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            5.4671946 = idf(docFreq=499, maxDocs=43556)
            0.09375 = fieldNorm(doc=2287)
      0.11853184 = weight(abstract_txt:free in 2287) [ClassicSimilarity], result of:
        0.11853184 = score(doc=2287,freq=1.0), product of:
          0.22542237 = queryWeight, product of:
            1.9428579 = boost
            5.6087584 = idf(docFreq=433, maxDocs=43556)
            0.020686606 = queryNorm
          0.5258211 = fieldWeight in 2287, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.6087584 = idf(docFreq=433, maxDocs=43556)
            0.09375 = fieldNorm(doc=2287)
      0.06691117 = weight(abstract_txt:text in 2287) [ClassicSimilarity], result of:
        0.06691117 = score(doc=2287,freq=1.0), product of:
          0.17625299 = queryWeight, product of:
            2.1040516 = boost
            4.0494018 = idf(docFreq=2063, maxDocs=43556)
            0.020686606 = queryNorm
          0.3796314 = fieldWeight in 2287, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.0494018 = idf(docFreq=2063, maxDocs=43556)
            0.09375 = fieldNorm(doc=2287)
    0.2 = coord(5/25)
  5. Davis, M.A.: Title keyword selection and use for optimum document retrieval : guidelines for authors (1996) 0.12 
    0.12338866 = sum of:
  0.12338866 = product of:
    0.51411945 = sum of:
      0.07762357 = weight(abstract_txt:assist in 984) [ClassicSimilarity], result of:
        0.07762357 = score(doc=984,freq=1.0), product of:
          0.1349251 = queryWeight, product of:
            1.0628548 = boost
            6.1366253 = idf(docFreq=255, maxDocs=43556)
            0.020686606 = queryNorm
          0.5753086 = fieldWeight in 984, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.1366253 = idf(docFreq=255, maxDocs=43556)
            0.09375 = fieldNorm(doc=984)
      0.10032963 = weight(abstract_txt:optimal in 984) [ClassicSimilarity], result of:
        0.10032963 = score(doc=984,freq=1.0), product of:
          0.16009697 = queryWeight, product of:
            1.1577615 = boost
            6.6845903 = idf(docFreq=147, maxDocs=43556)
            0.020686606 = queryNorm
          0.6266804 = fieldWeight in 984, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.6845903 = idf(docFreq=147, maxDocs=43556)
            0.09375 = fieldNorm(doc=984)
      0.03746124 = weight(abstract_txt:both in 984) [ClassicSimilarity], result of:
        0.03746124 = score(doc=984,freq=1.0), product of:
          0.10459119 = queryWeight, product of:
            1.3233968 = boost
            3.820461 = idf(docFreq=2594, maxDocs=43556)
            0.020686606 = queryNorm
          0.3581682 = fieldWeight in 984, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.820461 = idf(docFreq=2594, maxDocs=43556)
            0.09375 = fieldNorm(doc=984)
      0.04224364 = weight(abstract_txt:retrieval in 984) [ClassicSimilarity], result of:
        0.04224364 = score(doc=984,freq=1.0), product of:
          0.12971145 = queryWeight, product of:
            1.8050004 = boost
            3.4738557 = idf(docFreq=3669, maxDocs=43556)
            0.020686606 = queryNorm
          0.32567397 = fieldWeight in 984, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.4738557 = idf(docFreq=3669, maxDocs=43556)
            0.09375 = fieldNorm(doc=984)
      0.14668006 = weight(abstract_txt:vocabulary in 984) [ClassicSimilarity], result of:
        0.14668006 = score(doc=984,freq=2.0), product of:
          0.20622645 = queryWeight, product of:
            1.8582952 = boost
            5.364638 = idf(docFreq=553, maxDocs=43556)
            0.020686606 = queryNorm
          0.7112572 = fieldWeight in 984, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.364638 = idf(docFreq=553, maxDocs=43556)
            0.09375 = fieldNorm(doc=984)
      0.10978132 = weight(abstract_txt:controlled in 984) [ClassicSimilarity], result of:
        0.10978132 = score(doc=984,freq=1.0), product of:
          0.21418676 = queryWeight, product of:
            1.8938205 = boost
            5.4671946 = idf(docFreq=499, maxDocs=43556)
            0.020686606 = queryNorm
          0.5125495 = fieldWeight in 984, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.4671946 = idf(docFreq=499, maxDocs=43556)
            0.09375 = fieldNorm(doc=984)
    0.24 = coord(6/25)