Document (#5516)

Author
Hillman, D.J.
Title
Mathematical classification techniques for nonstatic document collections, with particular reference to the problem of relevance
Source
Classification research. Proc. of the 2nd Int. Study Conf. ... , Elsinore, 14.-18.9.1964. Ed.: P. Atherton
Imprint
Copenhagen : Munksgaard
Year
1965
Pages
S.177-218
Abstract
It is first argued that classification schemes have an essentially hypothetical nature, whose adoption is not anything which can be true or false. Such schemes are therefore corrigible and susceptible of modification as fresh data accrue. These schemes are tools for the logical analysis of the structure of recorded knowledge. Their use amount to the adoption of a hypothesis. ... It is therefore imperative that classification schemes be devised which do allow us to deal with sets of documents that change with time. The formal bases of two such schemes are next described. They are known, respectively, as implicative lattices and subtractive lattices ...
Theme
Klassifikationstheorie: Elemente / Struktur

Similar documents (content)

  1. Vogt, F.; Wille, R.: TOSCANA - a graphical tool for analyzing and exploring data (1995) 0.12
    0.12377526 = sum of:
      0.12377526 = product of:
        0.7735954 = sum of:
          0.07971338 = weight(abstract_txt:bases in 1969) [ClassicSimilarity], result of:
            0.07971338 = score(doc=1969,freq=1.0), product of:
              0.114521705 = queryWeight, product of:
                1.0022553 = boost
                6.3639297 = idf(docFreq=207, maxDocs=44421)
                0.017954944 = queryNorm
              0.6960548 = fieldWeight in 1969, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.3639297 = idf(docFreq=207, maxDocs=44421)
                0.109375 = fieldNorm(doc=1969)
          0.012272529 = weight(abstract_txt:that in 1969) [ClassicSimilarity], result of:
            0.012272529 = score(doc=1969,freq=1.0), product of:
              0.04744569 = queryWeight, product of:
                1.117361 = boost
                2.3649352 = idf(docFreq=11344, maxDocs=44421)
                0.017954944 = queryNorm
              0.2586648 = fieldWeight in 1969, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3649352 = idf(docFreq=11344, maxDocs=44421)
                0.109375 = fieldNorm(doc=1969)
          0.014430556 = weight(abstract_txt:with in 1969) [ClassicSimilarity], result of:
            0.014430556 = score(doc=1969,freq=1.0), product of:
              0.05285622 = queryWeight, product of:
                1.1793512 = boost
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.017954944 = queryNorm
              0.2730153 = fieldWeight in 1969, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.109375 = fieldNorm(doc=1969)
          0.6671789 = weight(abstract_txt:lattices in 1969) [ClassicSimilarity], result of:
            0.6671789 = score(doc=1969,freq=2.0), product of:
              0.47209406 = queryWeight, product of:
                2.8778207 = boost
                9.1365185 = idf(docFreq=12, maxDocs=44421)
                0.017954944 = queryNorm
              1.413233 = fieldWeight in 1969, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                9.1365185 = idf(docFreq=12, maxDocs=44421)
                0.109375 = fieldNorm(doc=1969)
        0.16 = coord(4/25)
    
  2. Iyer, H.; Giguere, M.: Towards designing an expert system to map mathematics classificatory structures (1995) 0.12
    0.12211933 = sum of:
      0.12211933 = product of:
        0.50883055 = sum of:
          0.06398425 = weight(abstract_txt:mathematical in 994) [ClassicSimilarity], result of:
            0.06398425 = score(doc=994,freq=2.0), product of:
              0.11400688 = queryWeight, product of:
                6.3496094 = idf(docFreq=210, maxDocs=44421)
                0.017954944 = queryNorm
              0.5612315 = fieldWeight in 994, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.3496094 = idf(docFreq=210, maxDocs=44421)
                0.0625 = fieldNorm(doc=994)
          0.014151748 = weight(abstract_txt:such in 994) [ClassicSimilarity], result of:
            0.014151748 = score(doc=994,freq=1.0), product of:
              0.06618746 = queryWeight, product of:
                1.0775498 = boost
                3.42101 = idf(docFreq=3945, maxDocs=44421)
                0.017954944 = queryNorm
              0.21381313 = fieldWeight in 994, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.42101 = idf(docFreq=3945, maxDocs=44421)
                0.0625 = fieldNorm(doc=994)
          0.012146653 = weight(abstract_txt:that in 994) [ClassicSimilarity], result of:
            0.012146653 = score(doc=994,freq=3.0), product of:
              0.04744569 = queryWeight, product of:
                1.117361 = boost
                2.3649352 = idf(docFreq=11344, maxDocs=44421)
                0.017954944 = queryNorm
              0.25601172 = fieldWeight in 994, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.3649352 = idf(docFreq=11344, maxDocs=44421)
                0.0625 = fieldNorm(doc=994)
          0.0082460325 = weight(abstract_txt:with in 994) [ClassicSimilarity], result of:
            0.0082460325 = score(doc=994,freq=1.0), product of:
              0.05285622 = queryWeight, product of:
                1.1793512 = boost
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.017954944 = queryNorm
              0.15600874 = fieldWeight in 994, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.0625 = fieldNorm(doc=994)
          0.07543049 = weight(abstract_txt:classification in 994) [ClassicSimilarity], result of:
            0.07543049 = score(doc=994,freq=5.0), product of:
              0.13519917 = queryWeight, product of:
                1.8861756 = boost
                3.9921594 = idf(docFreq=2228, maxDocs=44421)
                0.017954944 = queryNorm
              0.55792123 = fieldWeight in 994, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.9921594 = idf(docFreq=2228, maxDocs=44421)
                0.0625 = fieldNorm(doc=994)
          0.3348714 = weight(abstract_txt:schemes in 994) [ClassicSimilarity], result of:
            0.3348714 = score(doc=994,freq=5.0), product of:
              0.43298984 = queryWeight, product of:
                4.35771 = boost
                5.5339513 = idf(docFreq=476, maxDocs=44421)
                0.017954944 = queryNorm
              0.7733932 = fieldWeight in 994, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.5339513 = idf(docFreq=476, maxDocs=44421)
                0.0625 = fieldNorm(doc=994)
        0.24 = coord(6/25)
    
  3. Priss, U.: Comparing classification systems using facets (2000) 0.11
    0.112091154 = sum of:
      0.112091154 = product of:
        0.934093 = sum of:
          0.09541286 = weight(abstract_txt:classification in 485) [ClassicSimilarity], result of:
            0.09541286 = score(doc=485,freq=2.0), product of:
              0.13519917 = queryWeight, product of:
                1.8861756 = boost
                3.9921594 = idf(docFreq=2228, maxDocs=44421)
                0.017954944 = queryNorm
              0.7057207 = fieldWeight in 485, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9921594 = idf(docFreq=2228, maxDocs=44421)
                0.125 = fieldNorm(doc=485)
          0.53916204 = weight(abstract_txt:lattices in 485) [ClassicSimilarity], result of:
            0.53916204 = score(doc=485,freq=1.0), product of:
              0.47209406 = queryWeight, product of:
                2.8778207 = boost
                9.1365185 = idf(docFreq=12, maxDocs=44421)
                0.017954944 = queryNorm
              1.1420648 = fieldWeight in 485, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.1365185 = idf(docFreq=12, maxDocs=44421)
                0.125 = fieldNorm(doc=485)
          0.29951808 = weight(abstract_txt:schemes in 485) [ClassicSimilarity], result of:
            0.29951808 = score(doc=485,freq=1.0), product of:
              0.43298984 = queryWeight, product of:
                4.35771 = boost
                5.5339513 = idf(docFreq=476, maxDocs=44421)
                0.017954944 = queryNorm
              0.6917439 = fieldWeight in 485, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5339513 = idf(docFreq=476, maxDocs=44421)
                0.125 = fieldNorm(doc=485)
        0.12 = coord(3/25)
    
  4. Stock, W.G.: Informetrische Untersuchungsmethoden auf der Grundlage der Textwortmethode (1984) 0.11
    0.10979341 = sum of:
      0.10979341 = product of:
        0.9149451 = sum of:
          0.18097478 = weight(abstract_txt:mathematical in 720) [ClassicSimilarity], result of:
            0.18097478 = score(doc=720,freq=1.0), product of:
              0.11400688 = queryWeight, product of:
                6.3496094 = idf(docFreq=210, maxDocs=44421)
                0.017954944 = queryNorm
              1.5874023 = fieldWeight in 720, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.3496094 = idf(docFreq=210, maxDocs=44421)
                0.25 = fieldNorm(doc=720)
          0.13493416 = weight(abstract_txt:classification in 720) [ClassicSimilarity], result of:
            0.13493416 = score(doc=720,freq=1.0), product of:
              0.13519917 = queryWeight, product of:
                1.8861756 = boost
                3.9921594 = idf(docFreq=2228, maxDocs=44421)
                0.017954944 = queryNorm
              0.99803984 = fieldWeight in 720, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9921594 = idf(docFreq=2228, maxDocs=44421)
                0.25 = fieldNorm(doc=720)
          0.59903616 = weight(abstract_txt:schemes in 720) [ClassicSimilarity], result of:
            0.59903616 = score(doc=720,freq=1.0), product of:
              0.43298984 = queryWeight, product of:
                4.35771 = boost
                5.5339513 = idf(docFreq=476, maxDocs=44421)
                0.017954944 = queryNorm
              1.3834878 = fieldWeight in 720, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5339513 = idf(docFreq=476, maxDocs=44421)
                0.25 = fieldNorm(doc=720)
        0.12 = coord(3/25)
    
  5. Balakrishnan, U.; Voß, J.: ¬The Cocoda mapping tool (2015) 0.11
    0.10948901 = sum of:
      0.10948901 = product of:
        0.34215316 = sum of:
          0.032137282 = weight(abstract_txt:true in 205) [ClassicSimilarity], result of:
            0.032137282 = score(doc=205,freq=1.0), product of:
              0.12415906 = queryWeight, product of:
                1.043575 = boost
                6.6262937 = idf(docFreq=159, maxDocs=44421)
                0.017954944 = queryNorm
              0.2588396 = fieldWeight in 205, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.6262937 = idf(docFreq=159, maxDocs=44421)
                0.0390625 = fieldNorm(doc=205)
          0.012508497 = weight(abstract_txt:such in 205) [ClassicSimilarity], result of:
            0.012508497 = score(doc=205,freq=2.0), product of:
              0.06618746 = queryWeight, product of:
                1.0775498 = boost
                3.42101 = idf(docFreq=3945, maxDocs=44421)
                0.017954944 = queryNorm
              0.18898588 = fieldWeight in 205, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.42101 = idf(docFreq=3945, maxDocs=44421)
                0.0390625 = fieldNorm(doc=205)
          0.007591658 = weight(abstract_txt:that in 205) [ClassicSimilarity], result of:
            0.007591658 = score(doc=205,freq=3.0), product of:
              0.04744569 = queryWeight, product of:
                1.117361 = boost
                2.3649352 = idf(docFreq=11344, maxDocs=44421)
                0.017954944 = queryNorm
              0.16000733 = fieldWeight in 205, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.3649352 = idf(docFreq=11344, maxDocs=44421)
                0.0390625 = fieldNorm(doc=205)
          0.01030754 = weight(abstract_txt:with in 205) [ClassicSimilarity], result of:
            0.01030754 = score(doc=205,freq=4.0), product of:
              0.05285622 = queryWeight, product of:
                1.1793512 = boost
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.017954944 = queryNorm
              0.19501092 = fieldWeight in 205, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.0390625 = fieldNorm(doc=205)
          0.06475282 = weight(abstract_txt:imperative in 205) [ClassicSimilarity], result of:
            0.06475282 = score(doc=205,freq=1.0), product of:
              0.19806668 = queryWeight, product of:
                1.3180752 = boost
                8.369263 = idf(docFreq=27, maxDocs=44421)
                0.017954944 = queryNorm
              0.32692432 = fieldWeight in 205, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.369263 = idf(docFreq=27, maxDocs=44421)
                0.0390625 = fieldNorm(doc=205)
          0.03534178 = weight(abstract_txt:therefore in 205) [ClassicSimilarity], result of:
            0.03534178 = score(doc=205,freq=1.0), product of:
              0.1666638 = queryWeight, product of:
                1.7098975 = boost
                5.428591 = idf(docFreq=529, maxDocs=44421)
                0.017954944 = queryNorm
              0.21205433 = fieldWeight in 205, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.428591 = idf(docFreq=529, maxDocs=44421)
                0.0390625 = fieldNorm(doc=205)
          0.047144055 = weight(abstract_txt:classification in 205) [ClassicSimilarity], result of:
            0.047144055 = score(doc=205,freq=5.0), product of:
              0.13519917 = queryWeight, product of:
                1.8861756 = boost
                3.9921594 = idf(docFreq=2228, maxDocs=44421)
                0.017954944 = queryNorm
              0.34870076 = fieldWeight in 205, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.9921594 = idf(docFreq=2228, maxDocs=44421)
                0.0390625 = fieldNorm(doc=205)
          0.13236953 = weight(abstract_txt:schemes in 205) [ClassicSimilarity], result of:
            0.13236953 = score(doc=205,freq=2.0), product of:
              0.43298984 = queryWeight, product of:
                4.35771 = boost
                5.5339513 = idf(docFreq=476, maxDocs=44421)
                0.017954944 = queryNorm
              0.3057105 = fieldWeight in 205, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.5339513 = idf(docFreq=476, maxDocs=44421)
                0.0390625 = fieldNorm(doc=205)
        0.32 = coord(8/25)