Document (#12625)

Author
Eastman, C.M.
Title
Overlaps in postings to thesaurus terms : a preliminary study
Source
ASIS'88. Information technology: planning for the next fifty years. Proceedings of the 51st Annual Meeting of the Americal Society for Information Science, Atlanta, Georgia, 23.-27.10.1988. Vol.25. Ed. by C.L. Borgman and E.Y.H. Pai
Imprint
Medford, New Jersey : Learned Information Inc.
Year
1988
Pages
S.181-184
Abstract
The patterns of overlap between terms which are closely related in a thesaurus are considered. The relationships considered are parent/child, in which one term is a broader term of the other, and sibling in which to 2 terms share the same broader term. The patterns of overlap observed in the MeSH thesaurus with respect to selected MEDLINE postings are examined. The implications of the overlap patterns are discussed, in particular, the impact of the overlap patterns on the potential effectiveness of a proposed algorithm for handling negation is considered.
Theme
Konzeption und Anwendung des Prinzips Thesaurus
Object
MeSH

Similar documents (author)

  1. Eastman, C.M.: 30,000 hits may be better than 300 : precision anomalies in Internet searches (2002) 5.79
    5.7885127 = sum of:
      5.7885127 = weight(author_txt:eastman in 232) [ClassicSimilarity], result of:
        5.7885127 = fieldWeight in 232, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.2616205 = idf(docFreq=10, maxDocs=42596)
          0.625 = fieldNorm(doc=232)
    
  2. Chang, Y.F.; Eastman, C.M.: ¬An information retrieval system for reusable software (1993) 4.63
    4.6308103 = sum of:
      4.6308103 = weight(author_txt:eastman in 6348) [ClassicSimilarity], result of:
        4.6308103 = fieldWeight in 6348, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.2616205 = idf(docFreq=10, maxDocs=42596)
          0.5 = fieldNorm(doc=6348)
    
  3. Eastman, C.M.; Carter, R.M.: Anthropological perspectives on classification schemes (1994) 4.63
    4.6308103 = sum of:
      4.6308103 = weight(author_txt:eastman in 888) [ClassicSimilarity], result of:
        4.6308103 = fieldWeight in 888, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.2616205 = idf(docFreq=10, maxDocs=42596)
          0.5 = fieldNorm(doc=888)
    
  4. Rose, J.R.; Eastman, C.M.: Hierarchical classification as an aid to browsing (1994) 4.63
    4.6308103 = sum of:
      4.6308103 = weight(author_txt:eastman in 894) [ClassicSimilarity], result of:
        4.6308103 = fieldWeight in 894, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.2616205 = idf(docFreq=10, maxDocs=42596)
          0.5 = fieldNorm(doc=894)
    
  5. Nakkouzi, Z.S.; Eastman, C.M.: Query formulation for handling negation in information retrieval systems (1990) 4.63
    4.6308103 = sum of:
      4.6308103 = weight(author_txt:eastman in 3600) [ClassicSimilarity], result of:
        4.6308103 = fieldWeight in 3600, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.2616205 = idf(docFreq=10, maxDocs=42596)
          0.5 = fieldNorm(doc=3600)
    

Similar documents (content)

  1. Bean, C.: ¬The semantics of hierarchy : explicit parent-child relationships in MeSH tree structures (1998) 0.17
    0.17147993 = sum of:
      0.17147993 = product of:
        0.7144997 = sum of:
          0.036014497 = weight(abstract_txt:selected in 1043) [ClassicSimilarity], result of:
            0.036014497 = score(doc=1043,freq=1.0), product of:
              0.07334144 = queryWeight, product of:
                1.0027814 = boost
                5.2378936 = idf(docFreq=614, maxDocs=42596)
                0.013963248 = queryNorm
              0.4910525 = fieldWeight in 1043, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2378936 = idf(docFreq=614, maxDocs=42596)
                0.09375 = fieldNorm(doc=1043)
          0.09709615 = weight(abstract_txt:mesh in 1043) [ClassicSimilarity], result of:
            0.09709615 = score(doc=1043,freq=1.0), product of:
              0.14206895 = queryWeight, product of:
                1.3956649 = boost
                7.2900677 = idf(docFreq=78, maxDocs=42596)
                0.013963248 = queryNorm
              0.68344384 = fieldWeight in 1043, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.2900677 = idf(docFreq=78, maxDocs=42596)
                0.09375 = fieldNorm(doc=1043)
          0.12937306 = weight(abstract_txt:parent in 1043) [ClassicSimilarity], result of:
            0.12937306 = score(doc=1043,freq=1.0), product of:
              0.17202586 = queryWeight, product of:
                1.535778 = boost
                8.02193 = idf(docFreq=37, maxDocs=42596)
                0.013963248 = queryNorm
              0.7520559 = fieldWeight in 1043, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.02193 = idf(docFreq=37, maxDocs=42596)
                0.09375 = fieldNorm(doc=1043)
          0.14289589 = weight(abstract_txt:child in 1043) [ClassicSimilarity], result of:
            0.14289589 = score(doc=1043,freq=1.0), product of:
              0.18381362 = queryWeight, product of:
                1.5875244 = boost
                8.29222 = idf(docFreq=28, maxDocs=42596)
                0.013963248 = queryNorm
              0.7773956 = fieldWeight in 1043, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.29222 = idf(docFreq=28, maxDocs=42596)
                0.09375 = fieldNorm(doc=1043)
          0.096606046 = weight(abstract_txt:considered in 1043) [ClassicSimilarity], result of:
            0.096606046 = score(doc=1043,freq=1.0), product of:
              0.20420879 = queryWeight, product of:
                2.8982072 = boost
                5.0461316 = idf(docFreq=744, maxDocs=42596)
                0.013963248 = queryNorm
              0.47307485 = fieldWeight in 1043, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0461316 = idf(docFreq=744, maxDocs=42596)
                0.09375 = fieldNorm(doc=1043)
          0.21251401 = weight(abstract_txt:patterns in 1043) [ClassicSimilarity], result of:
            0.21251401 = score(doc=1043,freq=2.0), product of:
              0.30174002 = queryWeight, product of:
                4.0679727 = boost
                5.3121266 = idf(docFreq=570, maxDocs=42596)
                0.013963248 = queryNorm
              0.7042951 = fieldWeight in 1043, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.3121266 = idf(docFreq=570, maxDocs=42596)
                0.09375 = fieldNorm(doc=1043)
        0.24 = coord(6/25)
    
  2. MacCain, K.W.: Descriptor and citation retrieval in the medical behavioral sciences literature : retrieval overlaps and novelty distribution (1989) 0.16
    0.1624171 = sum of:
      0.1624171 = product of:
        0.81208545 = sum of:
          0.047110036 = weight(abstract_txt:observed in 2290) [ClassicSimilarity], result of:
            0.047110036 = score(doc=2290,freq=1.0), product of:
              0.099059075 = queryWeight, product of:
                1.1654099 = boost
                6.087362 = idf(docFreq=262, maxDocs=42596)
                0.013963248 = queryNorm
              0.47557515 = fieldWeight in 2290, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.087362 = idf(docFreq=262, maxDocs=42596)
                0.078125 = fieldNorm(doc=2290)
          0.06521459 = weight(abstract_txt:medline in 2290) [ClassicSimilarity], result of:
            0.06521459 = score(doc=2290,freq=1.0), product of:
              0.12304062 = queryWeight, product of:
                1.2988405 = boost
                6.7843184 = idf(docFreq=130, maxDocs=42596)
                0.013963248 = queryNorm
              0.5300249 = fieldWeight in 2290, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7843184 = idf(docFreq=130, maxDocs=42596)
                0.078125 = fieldNorm(doc=2290)
          0.015827177 = weight(abstract_txt:which in 2290) [ClassicSimilarity], result of:
            0.015827177 = score(doc=2290,freq=1.0), product of:
              0.06904434 = queryWeight, product of:
                1.6852186 = boost
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.013963248 = queryNorm
              0.22923209 = fieldWeight in 2290, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.078125 = fieldNorm(doc=2290)
          0.1252251 = weight(abstract_txt:patterns in 2290) [ClassicSimilarity], result of:
            0.1252251 = score(doc=2290,freq=1.0), product of:
              0.30174002 = queryWeight, product of:
                4.0679727 = boost
                5.3121266 = idf(docFreq=570, maxDocs=42596)
                0.013963248 = queryNorm
              0.4150099 = fieldWeight in 2290, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.3121266 = idf(docFreq=570, maxDocs=42596)
                0.078125 = fieldNorm(doc=2290)
          0.55870855 = weight(abstract_txt:overlap in 2290) [ClassicSimilarity], result of:
            0.55870855 = score(doc=2290,freq=4.0), product of:
              0.5151601 = queryWeight, product of:
                5.31536 = boost
                6.9410167 = idf(docFreq=111, maxDocs=42596)
                0.013963248 = queryNorm
              1.0845338 = fieldWeight in 2290, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.9410167 = idf(docFreq=111, maxDocs=42596)
                0.078125 = fieldNorm(doc=2290)
        0.2 = coord(5/25)
    
  3. Diodato, V.; Henry, G.: ¬The rates of assignment of narrower terms in the Thesaurus of ERIC Descriptors (1993) 0.13
    0.13266964 = sum of:
      0.13266964 = product of:
        0.82918525 = sum of:
          0.15084934 = weight(abstract_txt:terms in 3921) [ClassicSimilarity], result of:
            0.15084934 = score(doc=3921,freq=9.0), product of:
              0.13213556 = queryWeight, product of:
                2.3313208 = boost
                4.0591135 = idf(docFreq=1998, maxDocs=42596)
                0.013963248 = queryNorm
              1.1416256 = fieldWeight in 3921, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                4.0591135 = idf(docFreq=1998, maxDocs=42596)
                0.09375 = fieldNorm(doc=3921)
          0.14670862 = weight(abstract_txt:term in 3921) [ClassicSimilarity], result of:
            0.14670862 = score(doc=3921,freq=3.0), product of:
              0.1870689 = queryWeight, product of:
                2.773914 = boost
                4.829722 = idf(docFreq=924, maxDocs=42596)
                0.013963248 = queryNorm
              0.7842491 = fieldWeight in 3921, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.829722 = idf(docFreq=924, maxDocs=42596)
                0.09375 = fieldNorm(doc=3921)
          0.14605758 = weight(abstract_txt:thesaurus in 3921) [ClassicSimilarity], result of:
            0.14605758 = score(doc=3921,freq=2.0), product of:
              0.21350645 = queryWeight, product of:
                2.9634507 = boost
                5.1597285 = idf(docFreq=664, maxDocs=42596)
                0.013963248 = queryNorm
              0.6840898 = fieldWeight in 3921, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.1597285 = idf(docFreq=664, maxDocs=42596)
                0.09375 = fieldNorm(doc=3921)
          0.38556975 = weight(abstract_txt:postings in 3921) [ClassicSimilarity], result of:
            0.38556975 = score(doc=3921,freq=2.0), product of:
              0.3562595 = queryWeight, product of:
                3.125574 = boost
                8.163008 = idf(docFreq=32, maxDocs=42596)
                0.013963248 = queryNorm
              1.0822722 = fieldWeight in 3921, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.163008 = idf(docFreq=32, maxDocs=42596)
                0.09375 = fieldNorm(doc=3921)
        0.16 = coord(4/25)
    
  4. Nelson, S.J.; Johnston, W.D.; Humphreys, B.L.: Relationships in Medical Subject Headings (MeSH) (2001) 0.13
    0.12615846 = sum of:
      0.12615846 = product of:
        0.5256603 = sum of:
          0.08624871 = weight(abstract_txt:parent in 2155) [ClassicSimilarity], result of:
            0.08624871 = score(doc=2155,freq=1.0), product of:
              0.17202586 = queryWeight, product of:
                1.535778 = boost
                8.02193 = idf(docFreq=37, maxDocs=42596)
                0.013963248 = queryNorm
              0.5013706 = fieldWeight in 2155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.02193 = idf(docFreq=37, maxDocs=42596)
                0.0625 = fieldNorm(doc=2155)
          0.095263936 = weight(abstract_txt:child in 2155) [ClassicSimilarity], result of:
            0.095263936 = score(doc=2155,freq=1.0), product of:
              0.18381362 = queryWeight, product of:
                1.5875244 = boost
                8.29222 = idf(docFreq=28, maxDocs=42596)
                0.013963248 = queryNorm
              0.51826376 = fieldWeight in 2155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.29222 = idf(docFreq=28, maxDocs=42596)
                0.0625 = fieldNorm(doc=2155)
          0.033522077 = weight(abstract_txt:terms in 2155) [ClassicSimilarity], result of:
            0.033522077 = score(doc=2155,freq=1.0), product of:
              0.13213556 = queryWeight, product of:
                2.3313208 = boost
                4.0591135 = idf(docFreq=1998, maxDocs=42596)
                0.013963248 = queryNorm
              0.2536946 = fieldWeight in 2155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.0591135 = idf(docFreq=1998, maxDocs=42596)
                0.0625 = fieldNorm(doc=2155)
          0.1349019 = weight(abstract_txt:broader in 2155) [ClassicSimilarity], result of:
            0.1349019 = score(doc=2155,freq=3.0), product of:
              0.20249158 = queryWeight, product of:
                2.3564057 = boost
                6.154184 = idf(docFreq=245, maxDocs=42596)
                0.013963248 = queryNorm
              0.66620994 = fieldWeight in 2155, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.154184 = idf(docFreq=245, maxDocs=42596)
                0.0625 = fieldNorm(doc=2155)
          0.05646817 = weight(abstract_txt:term in 2155) [ClassicSimilarity], result of:
            0.05646817 = score(doc=2155,freq=1.0), product of:
              0.1870689 = queryWeight, product of:
                2.773914 = boost
                4.829722 = idf(docFreq=924, maxDocs=42596)
                0.013963248 = queryNorm
              0.30185762 = fieldWeight in 2155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.829722 = idf(docFreq=924, maxDocs=42596)
                0.0625 = fieldNorm(doc=2155)
          0.11925551 = weight(abstract_txt:thesaurus in 2155) [ClassicSimilarity], result of:
            0.11925551 = score(doc=2155,freq=3.0), product of:
              0.21350645 = queryWeight, product of:
                2.9634507 = boost
                5.1597285 = idf(docFreq=664, maxDocs=42596)
                0.013963248 = queryNorm
              0.558557 = fieldWeight in 2155, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.1597285 = idf(docFreq=664, maxDocs=42596)
                0.0625 = fieldNorm(doc=2155)
        0.24 = coord(6/25)
    
  5. Ridenour, L.: Boundary objects : measuring gaps and overlap between research areas (2016) 0.11
    0.11042241 = sum of:
      0.11042241 = product of:
        0.46009338 = sum of:
          0.024009665 = weight(abstract_txt:selected in 3836) [ClassicSimilarity], result of:
            0.024009665 = score(doc=3836,freq=1.0), product of:
              0.07334144 = queryWeight, product of:
                1.0027814 = boost
                5.2378936 = idf(docFreq=614, maxDocs=42596)
                0.013963248 = queryNorm
              0.32736835 = fieldWeight in 3836, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2378936 = idf(docFreq=614, maxDocs=42596)
                0.0625 = fieldNorm(doc=3836)
          0.038045656 = weight(abstract_txt:share in 3836) [ClassicSimilarity], result of:
            0.038045656 = score(doc=3836,freq=1.0), product of:
              0.099684745 = queryWeight, product of:
                1.1690845 = boost
                6.106556 = idf(docFreq=257, maxDocs=42596)
                0.013963248 = queryNorm
              0.38165975 = fieldWeight in 3836, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.106556 = idf(docFreq=257, maxDocs=42596)
                0.0625 = fieldNorm(doc=3836)
          0.017906407 = weight(abstract_txt:which in 3836) [ClassicSimilarity], result of:
            0.017906407 = score(doc=3836,freq=2.0), product of:
              0.06904434 = queryWeight, product of:
                1.6852186 = boost
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.013963248 = queryNorm
              0.2593465 = fieldWeight in 3836, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.0625 = fieldNorm(doc=3836)
          0.05646817 = weight(abstract_txt:term in 3836) [ClassicSimilarity], result of:
            0.05646817 = score(doc=3836,freq=1.0), product of:
              0.1870689 = queryWeight, product of:
                2.773914 = boost
                4.829722 = idf(docFreq=924, maxDocs=42596)
                0.013963248 = queryNorm
              0.30185762 = fieldWeight in 3836, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.829722 = idf(docFreq=924, maxDocs=42596)
                0.0625 = fieldNorm(doc=3836)
          0.100180075 = weight(abstract_txt:patterns in 3836) [ClassicSimilarity], result of:
            0.100180075 = score(doc=3836,freq=1.0), product of:
              0.30174002 = queryWeight, product of:
                4.0679727 = boost
                5.3121266 = idf(docFreq=570, maxDocs=42596)
                0.013963248 = queryNorm
              0.3320079 = fieldWeight in 3836, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.3121266 = idf(docFreq=570, maxDocs=42596)
                0.0625 = fieldNorm(doc=3836)
          0.22348341 = weight(abstract_txt:overlap in 3836) [ClassicSimilarity], result of:
            0.22348341 = score(doc=3836,freq=1.0), product of:
              0.5151601 = queryWeight, product of:
                5.31536 = boost
                6.9410167 = idf(docFreq=111, maxDocs=42596)
                0.013963248 = queryNorm
              0.43381354 = fieldWeight in 3836, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.9410167 = idf(docFreq=111, maxDocs=42596)
                0.0625 = fieldNorm(doc=3836)
        0.24 = coord(6/25)