Document (#36832)

Author
Scharnhorst, A.
Salah, A.A.
Gao, C.
Suchecki, K.
Smiraglia, R.P.
Title
¬The evolution of knowledge, and its representation in classification systems
Source
Classification and ontology: formal approaches and access to knowledge: proceedings of the International UDC Seminar, 19-20 September 2011, The Hague, The Netherlands. Eds.: A. Slavic u. E. Civallero
Imprint
Würzburg : Ergon Verlag
Year
2011
Pages
S.269-282
Abstract
Classification systems are often described as stable reference systems. Sometimes they are accused of being inflexible concerning the coverage of new ideas and scientific fields. Classification as an activity is the basis of all theory-generating research, and also plays a powerful role in social ordering. It is obvious that the ways in which we seek information and in which information is provided has changed dramatically since the emergence of digital information processing and even more with the internet, and web-based technologies. The purpose of this paper is to illustrate the notion of a stable knowledge organization classification as a temporary stationary manifestation of an open and evolving system of classification. We compare the structure of the main classes in the Universal Decimal Classification (UDC) according to their usage of special auxiliaries to demonstrate the dynamic evolution of the UDC over time, as a stable reference system representing published organized knowledge. We view the ecology of the UDC, and discover that most changes are to the ecology itself as numbers are re-interpreted. This subtle type of change is a key to monitoring the evolution of knowledge as it is represented in the UDC's stable reference system.
Object
UDC

Similar documents (author)

  1. Salah, A.A.; Gao, C.; Suchecki, K.; Scharnhorst, A.; Smiraglia, R.P.: ¬The evolution of classification systems : ontogeny of the UDC (2012) 4.82
    4.8199596 = sum of:
      4.8199596 = sum of:
        0.8690144 = weight(author_txt:smiraglia in 2826) [ClassicSimilarity], result of:
          0.8690144 = score(doc=2826,freq=1.0), product of:
            0.3784175 = queryWeight, product of:
              7.348619 = idf(docFreq=73, maxDocs=42306)
              0.05149505 = queryNorm
            2.2964435 = fieldWeight in 2826, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.348619 = idf(docFreq=73, maxDocs=42306)
              0.3125 = fieldNorm(doc=2826)
        1.8512185 = weight(author_txt:scharnhorst in 2826) [ClassicSimilarity], result of:
          1.8512185 = score(doc=2826,freq=1.0), product of:
            0.6265057 = queryWeight, product of:
              1.2866988 = boost
              9.45546 = idf(docFreq=8, maxDocs=42306)
              0.05149505 = queryNorm
            2.9548311 = fieldWeight in 2826, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.45546 = idf(docFreq=8, maxDocs=42306)
              0.3125 = fieldNorm(doc=2826)
        2.0997264 = weight(author_txt:salah in 2826) [ClassicSimilarity], result of:
          2.0997264 = score(doc=2826,freq=1.0), product of:
            0.6813889 = queryWeight, product of:
              1.3418746 = boost
              9.860925 = idf(docFreq=5, maxDocs=42306)
              0.05149505 = queryNorm
            3.081539 = fieldWeight in 2826, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.860925 = idf(docFreq=5, maxDocs=42306)
              0.3125 = fieldNorm(doc=2826)
    
  2. Scharnhorst, A.; Smiraglia, R.P.; Guéret, C.; Salah, A.A.A.: Knowledge maps for libraries and archives : uses and use cases (2015) 4.82
    4.8199596 = sum of:
      4.8199596 = sum of:
        0.8690144 = weight(author_txt:smiraglia in 4305) [ClassicSimilarity], result of:
          0.8690144 = score(doc=4305,freq=1.0), product of:
            0.3784175 = queryWeight, product of:
              7.348619 = idf(docFreq=73, maxDocs=42306)
              0.05149505 = queryNorm
            2.2964435 = fieldWeight in 4305, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.348619 = idf(docFreq=73, maxDocs=42306)
              0.3125 = fieldNorm(doc=4305)
        1.8512185 = weight(author_txt:scharnhorst in 4305) [ClassicSimilarity], result of:
          1.8512185 = score(doc=4305,freq=1.0), product of:
            0.6265057 = queryWeight, product of:
              1.2866988 = boost
              9.45546 = idf(docFreq=8, maxDocs=42306)
              0.05149505 = queryNorm
            2.9548311 = fieldWeight in 4305, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.45546 = idf(docFreq=8, maxDocs=42306)
              0.3125 = fieldNorm(doc=4305)
        2.0997264 = weight(author_txt:salah in 4305) [ClassicSimilarity], result of:
          2.0997264 = score(doc=4305,freq=1.0), product of:
            0.6813889 = queryWeight, product of:
              1.3418746 = boost
              9.860925 = idf(docFreq=5, maxDocs=42306)
              0.05149505 = queryNorm
            3.081539 = fieldWeight in 4305, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.860925 = idf(docFreq=5, maxDocs=42306)
              0.3125 = fieldNorm(doc=4305)
    
  3. Szostak, R.; Scharnhorst, A.; Beek, W.; Smiraglia, R.P.: Connecting KOSs and the LOD cloud (2018) 1.81
    1.8134887 = sum of:
      1.8134887 = product of:
        2.720233 = sum of:
          0.8690144 = weight(author_txt:smiraglia in 1713) [ClassicSimilarity], result of:
            0.8690144 = score(doc=1713,freq=1.0), product of:
              0.3784175 = queryWeight, product of:
                7.348619 = idf(docFreq=73, maxDocs=42306)
                0.05149505 = queryNorm
              2.2964435 = fieldWeight in 1713, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.348619 = idf(docFreq=73, maxDocs=42306)
                0.3125 = fieldNorm(doc=1713)
          1.8512185 = weight(author_txt:scharnhorst in 1713) [ClassicSimilarity], result of:
            1.8512185 = score(doc=1713,freq=1.0), product of:
              0.6265057 = queryWeight, product of:
                1.2866988 = boost
                9.45546 = idf(docFreq=8, maxDocs=42306)
                0.05149505 = queryNorm
              2.9548311 = fieldWeight in 1713, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.45546 = idf(docFreq=8, maxDocs=42306)
                0.3125 = fieldNorm(doc=1713)
        0.6666667 = coord(2/3)
    
  4. Scharnhorst, A.: Citation - networks, science landscapes and evolutionary strategies (1998) 1.23
    1.2341456 = sum of:
      1.2341456 = product of:
        3.702437 = sum of:
          3.702437 = weight(author_txt:scharnhorst in 127) [ClassicSimilarity], result of:
            3.702437 = score(doc=127,freq=1.0), product of:
              0.6265057 = queryWeight, product of:
                1.2866988 = boost
                9.45546 = idf(docFreq=8, maxDocs=42306)
                0.05149505 = queryNorm
              5.9096622 = fieldWeight in 127, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.45546 = idf(docFreq=8, maxDocs=42306)
                0.625 = fieldNorm(doc=127)
        0.33333334 = coord(1/3)
    
  5. Leydesdorff, L.; Salah, A.A.A.: Maps on the basis of the Arts & Humanities Citation Index : the journals Leonardo and Art Journal versus "digital humanities" as a topic (2010) 1.12
    1.1198542 = sum of:
      1.1198542 = product of:
        3.3595624 = sum of:
          3.3595624 = weight(author_txt:salah in 437) [ClassicSimilarity], result of:
            3.3595624 = score(doc=437,freq=1.0), product of:
              0.6813889 = queryWeight, product of:
                1.3418746 = boost
                9.860925 = idf(docFreq=5, maxDocs=42306)
                0.05149505 = queryNorm
              4.9304624 = fieldWeight in 437, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.860925 = idf(docFreq=5, maxDocs=42306)
                0.5 = fieldNorm(doc=437)
        0.33333334 = coord(1/3)
    

Similar documents (content)

  1. Sachs, M.Y.; Smiraglia, R.P.: From encyclopedism to domain-based ontology for knowledge management : the evolution of the Sachs Classification (SC) (2004) 0.15
    0.15022756 = sum of:
      0.15022756 = product of:
        0.7511378 = sum of:
          0.056755327 = weight(abstract_txt:evolving in 3649) [ClassicSimilarity], result of:
            0.056755327 = score(doc=3649,freq=1.0), product of:
              0.11065628 = queryWeight, product of:
                6.565088 = idf(docFreq=161, maxDocs=42306)
                0.016855262 = queryNorm
              0.5128975 = fieldWeight in 3649, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.565088 = idf(docFreq=161, maxDocs=42306)
                0.078125 = fieldNorm(doc=3649)
          0.091940396 = weight(abstract_txt:knowledge in 3649) [ClassicSimilarity], result of:
            0.091940396 = score(doc=3649,freq=6.0), product of:
              0.1333354 = queryWeight, product of:
                2.1954052 = boost
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.016855262 = queryNorm
              0.6895423 = fieldWeight in 3649, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.078125 = fieldNorm(doc=3649)
          0.3310987 = weight(abstract_txt:ecology in 3649) [ClassicSimilarity], result of:
            0.3310987 = score(doc=3649,freq=2.0), product of:
              0.35859975 = queryWeight, product of:
                2.545845 = boost
                8.356848 = idf(docFreq=26, maxDocs=42306)
                0.016855262 = queryNorm
              0.9233099 = fieldWeight in 3649, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.356848 = idf(docFreq=26, maxDocs=42306)
                0.078125 = fieldNorm(doc=3649)
          0.116400026 = weight(abstract_txt:evolution in 3649) [ClassicSimilarity], result of:
            0.116400026 = score(doc=3649,freq=1.0), product of:
              0.25762072 = queryWeight, product of:
                2.6427922 = boost
                5.783387 = idf(docFreq=353, maxDocs=42306)
                0.016855262 = queryNorm
              0.4518271 = fieldWeight in 3649, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.783387 = idf(docFreq=353, maxDocs=42306)
                0.078125 = fieldNorm(doc=3649)
          0.15494333 = weight(abstract_txt:classification in 3649) [ClassicSimilarity], result of:
            0.15494333 = score(doc=3649,freq=4.0), product of:
              0.24742903 = queryWeight, product of:
                3.6627977 = boost
                4.007765 = idf(docFreq=2089, maxDocs=42306)
                0.016855262 = queryNorm
              0.62621325 = fieldWeight in 3649, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.007765 = idf(docFreq=2089, maxDocs=42306)
                0.078125 = fieldNorm(doc=3649)
        0.2 = coord(5/25)
    
  2. Rashid, A.: Library and information applications of knowledge based systems (1995) 0.14
    0.14409122 = sum of:
      0.14409122 = product of:
        0.5146115 = sum of:
          0.017219039 = weight(abstract_txt:information in 4419) [ClassicSimilarity], result of:
            0.017219039 = score(doc=4419,freq=2.0), product of:
              0.04570068 = queryWeight, product of:
                1.1130993 = boost
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.016855262 = queryNorm
              0.3767786 = fieldWeight in 4419, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.109375 = fieldNorm(doc=4419)
          0.03209611 = weight(abstract_txt:system in 4419) [ClassicSimilarity], result of:
            0.03209611 = score(doc=4419,freq=1.0), product of:
              0.08720907 = queryWeight, product of:
                1.5376356 = boost
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.016855262 = queryNorm
              0.3680364 = fieldWeight in 4419, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.109375 = fieldNorm(doc=4419)
          0.06723921 = weight(abstract_txt:systems in 4419) [ClassicSimilarity], result of:
            0.06723921 = score(doc=4419,freq=4.0), product of:
              0.089947365 = queryWeight, product of:
                1.5615892 = boost
                3.4173236 = idf(docFreq=3771, maxDocs=42306)
                0.016855262 = queryNorm
              0.7475395 = fieldWeight in 4419, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.4173236 = idf(docFreq=3771, maxDocs=42306)
                0.109375 = fieldNorm(doc=4419)
          0.07408838 = weight(abstract_txt:reference in 4419) [ClassicSimilarity], result of:
            0.07408838 = score(doc=4419,freq=1.0), product of:
              0.15232112 = queryWeight, product of:
                2.0321355 = boost
                4.447049 = idf(docFreq=1346, maxDocs=42306)
                0.016855262 = queryNorm
              0.486396 = fieldWeight in 4419, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.447049 = idf(docFreq=1346, maxDocs=42306)
                0.109375 = fieldNorm(doc=4419)
          0.052548315 = weight(abstract_txt:knowledge in 4419) [ClassicSimilarity], result of:
            0.052548315 = score(doc=4419,freq=1.0), product of:
              0.1333354 = queryWeight, product of:
                2.1954052 = boost
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.016855262 = queryNorm
              0.39410627 = fieldWeight in 4419, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.109375 = fieldNorm(doc=4419)
          0.16296005 = weight(abstract_txt:evolution in 4419) [ClassicSimilarity], result of:
            0.16296005 = score(doc=4419,freq=1.0), product of:
              0.25762072 = queryWeight, product of:
                2.6427922 = boost
                5.783387 = idf(docFreq=353, maxDocs=42306)
                0.016855262 = queryNorm
              0.632558 = fieldWeight in 4419, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.783387 = idf(docFreq=353, maxDocs=42306)
                0.109375 = fieldNorm(doc=4419)
          0.10846034 = weight(abstract_txt:classification in 4419) [ClassicSimilarity], result of:
            0.10846034 = score(doc=4419,freq=1.0), product of:
              0.24742903 = queryWeight, product of:
                3.6627977 = boost
                4.007765 = idf(docFreq=2089, maxDocs=42306)
                0.016855262 = queryNorm
              0.43834928 = fieldWeight in 4419, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.007765 = idf(docFreq=2089, maxDocs=42306)
                0.109375 = fieldNorm(doc=4419)
        0.28 = coord(7/25)
    
  3. Baldacchini, L.: Authority control of printers, publishers, and booksellers (2004) 0.10
    0.10208788 = sum of:
      0.10208788 = product of:
        0.5104394 = sum of:
          0.046463154 = weight(abstract_txt:sometimes in 677) [ClassicSimilarity], result of:
            0.046463154 = score(doc=677,freq=1.0), product of:
              0.1123701 = queryWeight, product of:
                1.0077142 = boost
                6.6157317 = idf(docFreq=153, maxDocs=42306)
                0.016855262 = queryNorm
              0.41348323 = fieldWeight in 677, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.6157317 = idf(docFreq=153, maxDocs=42306)
                0.0625 = fieldNorm(doc=677)
          0.0069575426 = weight(abstract_txt:information in 677) [ClassicSimilarity], result of:
            0.0069575426 = score(doc=677,freq=1.0), product of:
              0.04570068 = queryWeight, product of:
                1.1130993 = boost
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.016855262 = queryNorm
              0.15224156 = fieldWeight in 677, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.0625 = fieldNorm(doc=677)
          0.123325735 = weight(abstract_txt:manifestation in 677) [ClassicSimilarity], result of:
            0.123325735 = score(doc=677,freq=3.0), product of:
              0.14936209 = queryWeight, product of:
                1.161802 = boost
                7.6273327 = idf(docFreq=55, maxDocs=42306)
                0.016855262 = queryNorm
              0.825683 = fieldWeight in 677, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.6273327 = idf(docFreq=55, maxDocs=42306)
                0.0625 = fieldNorm(doc=677)
          0.09312002 = weight(abstract_txt:evolution in 677) [ClassicSimilarity], result of:
            0.09312002 = score(doc=677,freq=1.0), product of:
              0.25762072 = queryWeight, product of:
                2.6427922 = boost
                5.783387 = idf(docFreq=353, maxDocs=42306)
                0.016855262 = queryNorm
              0.3614617 = fieldWeight in 677, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.783387 = idf(docFreq=353, maxDocs=42306)
                0.0625 = fieldNorm(doc=677)
          0.2405729 = weight(abstract_txt:stable in 677) [ClassicSimilarity], result of:
            0.2405729 = score(doc=677,freq=1.0), product of:
              0.53386253 = queryWeight, product of:
                4.3929543 = boost
                7.210033 = idf(docFreq=84, maxDocs=42306)
                0.016855262 = queryNorm
              0.45062706 = fieldWeight in 677, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.210033 = idf(docFreq=84, maxDocs=42306)
                0.0625 = fieldNorm(doc=677)
        0.2 = coord(5/25)
    
  4. Dahlberg, I.: ¬A faceted classification of general concepts (2011) 0.10
    0.0994331 = sum of:
      0.0994331 = product of:
        0.41430458 = sum of:
          0.046463154 = weight(abstract_txt:sometimes in 1825) [ClassicSimilarity], result of:
            0.046463154 = score(doc=1825,freq=1.0), product of:
              0.1123701 = queryWeight, product of:
                1.0077142 = boost
                6.6157317 = idf(docFreq=153, maxDocs=42306)
                0.016855262 = queryNorm
              0.41348323 = fieldWeight in 1825, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.6157317 = idf(docFreq=153, maxDocs=42306)
                0.0625 = fieldNorm(doc=1825)
          0.0069575426 = weight(abstract_txt:information in 1825) [ClassicSimilarity], result of:
            0.0069575426 = score(doc=1825,freq=1.0), product of:
              0.04570068 = queryWeight, product of:
                1.1130993 = boost
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.016855262 = queryNorm
              0.15224156 = fieldWeight in 1825, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.0625 = fieldNorm(doc=1825)
          0.14985868 = weight(abstract_txt:auxiliaries in 1825) [ClassicSimilarity], result of:
            0.14985868 = score(doc=1825,freq=2.0), product of:
              0.19469565 = queryWeight, product of:
                1.3264476 = boost
                8.708245 = idf(docFreq=18, maxDocs=42306)
                0.016855262 = queryNorm
              0.7697074 = fieldWeight in 1825, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.708245 = idf(docFreq=18, maxDocs=42306)
                0.0625 = fieldNorm(doc=1825)
          0.025937576 = weight(abstract_txt:system in 1825) [ClassicSimilarity], result of:
            0.025937576 = score(doc=1825,freq=2.0), product of:
              0.08720907 = queryWeight, product of:
                1.5376356 = boost
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.016855262 = queryNorm
              0.29741833 = fieldWeight in 1825, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.0625 = fieldNorm(doc=1825)
          0.03327478 = weight(abstract_txt:systems in 1825) [ClassicSimilarity], result of:
            0.03327478 = score(doc=1825,freq=3.0), product of:
              0.089947365 = queryWeight, product of:
                1.5615892 = boost
                3.4173236 = idf(docFreq=3771, maxDocs=42306)
                0.016855262 = queryNorm
              0.36993614 = fieldWeight in 1825, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.4173236 = idf(docFreq=3771, maxDocs=42306)
                0.0625 = fieldNorm(doc=1825)
          0.15181285 = weight(abstract_txt:classification in 1825) [ClassicSimilarity], result of:
            0.15181285 = score(doc=1825,freq=6.0), product of:
              0.24742903 = queryWeight, product of:
                3.6627977 = boost
                4.007765 = idf(docFreq=2089, maxDocs=42306)
                0.016855262 = queryNorm
              0.6135612 = fieldWeight in 1825, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.007765 = idf(docFreq=2089, maxDocs=42306)
                0.0625 = fieldNorm(doc=1825)
        0.24 = coord(6/25)
    
  5. Data analysis and information systems, statistical and conceptual approaches : Proceedings of the 19th Annual Conference of the Gesellschaft für Klassifikation e.V., University of Basel, March 8-10, 1995 (1996) 0.10
    0.09867324 = sum of:
      0.09867324 = product of:
        0.49336618 = sum of:
          0.13375235 = weight(abstract_txt:ordering in 5974) [ClassicSimilarity], result of:
            0.13375235 = score(doc=5974,freq=1.0), product of:
              0.12344852 = queryWeight, product of:
                1.0562212 = boost
                6.9341855 = idf(docFreq=111, maxDocs=42306)
                0.016855262 = queryNorm
              1.0834665 = fieldWeight in 5974, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.9341855 = idf(docFreq=111, maxDocs=42306)
                0.15625 = fieldNorm(doc=5974)
          0.017393857 = weight(abstract_txt:information in 5974) [ClassicSimilarity], result of:
            0.017393857 = score(doc=5974,freq=1.0), product of:
              0.04570068 = queryWeight, product of:
                1.1130993 = boost
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.016855262 = queryNorm
              0.3806039 = fieldWeight in 5974, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.15625 = fieldNorm(doc=5974)
          0.04802801 = weight(abstract_txt:systems in 5974) [ClassicSimilarity], result of:
            0.04802801 = score(doc=5974,freq=1.0), product of:
              0.089947365 = queryWeight, product of:
                1.5615892 = boost
                3.4173236 = idf(docFreq=3771, maxDocs=42306)
                0.016855262 = queryNorm
              0.5339568 = fieldWeight in 5974, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4173236 = idf(docFreq=3771, maxDocs=42306)
                0.15625 = fieldNorm(doc=5974)
          0.07506902 = weight(abstract_txt:knowledge in 5974) [ClassicSimilarity], result of:
            0.07506902 = score(doc=5974,freq=1.0), product of:
              0.1333354 = queryWeight, product of:
                2.1954052 = boost
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.016855262 = queryNorm
              0.5630089 = fieldWeight in 5974, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.15625 = fieldNorm(doc=5974)
          0.21912296 = weight(abstract_txt:classification in 5974) [ClassicSimilarity], result of:
            0.21912296 = score(doc=5974,freq=2.0), product of:
              0.24742903 = queryWeight, product of:
                3.6627977 = boost
                4.007765 = idf(docFreq=2089, maxDocs=42306)
                0.016855262 = queryNorm
              0.88559926 = fieldWeight in 5974, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.007765 = idf(docFreq=2089, maxDocs=42306)
                0.15625 = fieldNorm(doc=5974)
        0.2 = coord(5/25)